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CWE-311

Missing Encryption of Sensitive Data

235 CVEs Avg CVSS 6.7 MITRE
15
CRITICAL
101
HIGH
105
MEDIUM
14
LOW
43
POC
1
KEV

Monthly

CVE-2026-81688 Aug 27, 14:50 HIGH PATCH This Week

openssl_encrypt by jahlives (versions before 1.4.9) embeds an unkeyed SHA-256 digest of each plaintext document into the encrypted file's cleartext header, creating a passive plaintext-confirmation oracle. Any party who possesses an encrypted file - including unauthorized recipients of intercepted or leaked archives - can extract this hash without the encryption password and use it to verify guessed or known plaintexts via offline dictionary attacks. Additionally, because the hash is unkeyed and deterministic, identical source documents encrypted separately under different passwords produce matching header hashes, enabling cross-file correlation and fingerprinting that undermines the confidentiality guarantees users expect from file encryption. No public exploit code has been identified at time of analysis, and this vulnerability does not appear in CISA KEV.

Information Disclosure Openssl Encrypt
NVD GitHub
CVSS 4.0
8.7
EPSS
0.2%
CVE-2026-81681 Aug 27, 14:50 CRITICAL PATCH Act Now

Sensitive-file exposure in the openssl-encrypt pip package (openssl_encrypt) at versions <= 1.4.8 stems from its 'Encrypted USB Workspace' feature writing a marker that falsely declares the workspace AES-256-GCM encrypted while the derived key is never applied and the directory remains in cleartext. Users who trust the branding and store files in the workspace leave them fully readable on the removable media, so anyone with physical possession of the USB device can recover the data. No public exploit identified at time of analysis and the flaw is not in CISA KEV, but the failure silently defeats the product's core security promise.

Hashicorp Information Disclosure OpenSSL Openssl Encrypt
NVD GitHub
CVSS 4.0
9.3
EPSS
0.1%
CVE-2026-77812 Aug 21, 14:06 CRITICAL Act Now

Cleartext exposure of Wi-Fi credentials in DJI consumer and prosumer drones lets an attacker within Bluetooth range recover the drone's Wi-Fi SSID, PSK, and trusted-client UUID by passively sniffing unencrypted DUML-over-BLE messages exchanged during a normal DJI Fly connection or QuickTransfer handoff. This affects a broad range of current DJI models (Neo, Flip, Air 3/3S, Avata 2/360, Mavic 3 family, Mavic 4 Pro, and Mini 2 through Mini 5 Pro) below specific firmware versions. Recovered credentials grant the attacker access to the drone's internal Wi-Fi network and the ability to decrypt the operator's Wi-Fi traffic; no public exploit identified at time of analysis, and it is not listed in CISA KEV.

Information Disclosure Dji Neo Dji Neo 2 Dji Flip Dji Air 3 +12
NVD VulDB
CVSS 4.0
9.4
EPSS
0.1%
CVE-2025-59325 Aug 12, 00:00 HIGH This Week

CryptoPro Secure Disk for BitLocker before v7.7.4 stores initramfs contents in plaintext on disk, allowing a physical attacker to recover cryptographic keys and other secrets without defeating the encryption layer. The vulnerability was publicly disclosed at Black Hat USA 2026 by researcher Burch in a presentation titled 'The Cost of Obscurity,' suggesting the vendor's security model relied on implementation obscurity rather than cryptographic assurance. No public exploit identified at time of analysis; EPSS at 0.17% reflects the physical-access prerequisite that limits widespread automated exploitation.

Information Disclosure N A
NVD
CVSS 3.1
7.5
EPSS
0.2%
CVE-2026-21079 Aug 10, 07:43 HIGH This Week

Unencrypted data transmission in Samsung Smart Switch prior to version 3.7.72.6 exposes sensitive personal data to interception by adjacent network attackers. An attacker positioned on the same network segment can passively capture data flowing between devices during an active Smart Switch wireless transfer session. No public exploit has been identified and no CISA KEV listing exists, but the adjacent-network vector and low attack complexity make this a realistic threat on shared or untrusted Wi-Fi networks.

Information Disclosure Smart Switch
NVD VulDB
CVSS 4.0
7.0
EPSS
0.1%
CVE-2026-20157 Jul 15, 16:18 CRITICAL Act Now

Missing-encryption weaknesses in Cisco RoomOS software (the OS for Cisco Webex/Room collaboration endpoints) were fixed in an internal-hardening release covering multiple internally discovered issues grouped under CWE-311. Because sensitive data or communications are not adequately encrypted, network-positioned attackers could intercept or expose information handled by affected devices. There is no public exploit identified at time of analysis and this CVE is not in CISA KEV; EPSS is negligible at 0.06% (0th percentile), consistent with SSVC 'Exploitation: none.' Note the published CVSS 9.8 (C:H/I:H/A:H) sits uneasily against a CWE-311/Information-Disclosure classification, which normally implies a confidentiality-centric impact.

Cisco Information Disclosure Cisco Roomos Software
NVD VulDB
CVSS 3.1
9.8
EPSS
0.1%
CVE-2026-54784 Jun 19, 20:47 NuGet HIGH PATCH GHSA This Week

Authenticated principal impersonation in CoreWCF (versions >=1.9.0, <1.9.1) occurs because the SPNEGO SecurityContextToken proof key returned in the RequestSecurityTokenResponse (RSTR) is wrapped without confidentiality protection, allowing any on-path observer to recover it. An attacker who captures the unprotected handshake can impersonate the authenticated Windows principal for the SCT lifetime (~10 hours) and decrypt or forge subsequent WS-SecureConversation traffic. No public exploit identified at time of analysis, but the vendor-confirmed advisory (GHSA-2288-8h3r-cqgg) and CVSS 7.4 indicate a meaningful confidentiality/integrity exposure for affected .NET WCF replacement deployments.

Microsoft Information Disclosure
NVD GitHub
CVSS 3.1
7.4
EPSS
0.2%
CVE-2026-55568 Jun 19, 14:17 PHP MEDIUM PATCH GHSA This Month

Silent TLS downgrade in Guzzle's built-in cURL handlers exposes proxy credentials and tunneled connection metadata to network interception when the application is configured to use an https:// proxy but runs against libcurl older than 7.50.2. Affected deployments see proxy authentication headers (Proxy-Authorization, CURLOPT_PROXYUSERPWD), CONNECT target host/port for tunneled HTTPS, and full request headers and bodies for plain HTTP requests transmitted without encryption - with no runtime error or warning from Guzzle or libcurl. No public exploit identified at time of analysis and no CISA KEV listing; however, the CVSS confidentiality impact is rated High (C:H) due to full credential exposure on the proxy leg.

PHP Information Disclosure
NVD GitHub
CVSS 3.1
5.9
EPSS
0.1%
CVE-2026-53442 Jun 10, 13:06 Maven MEDIUM PATCH This Month

Unencrypted secret storage in Jenkins 2.567 and earlier (LTS 2.555.2 and earlier) exposes credentials submitted via POST config.xml to any user holding Item/Extended Read permission or with read access to the Jenkins controller filesystem. Secrets that should be encrypted at rest are written as plaintext into job config.xml files, making them directly readable through Jenkins' built-in permission model or OS-level file access. No public exploit code has been identified and this CVE is not listed in the CISA KEV catalog, but the privileged insider and lateral-movement risk is significant for organizations embedding CI/CD credentials in job configurations.

Information Disclosure Jenkins Red Hat
NVD VulDB
CVSS 3.1
5.3
EPSS
0.0%
CVE-2026-34486 Apr 09, 19:35 Maven HIGH POC KEV PATCH THREAT GHSA Act Now

Missing encryption of cluster replication traffic in Apache Tomcat 11.0.20, 10.1.53, and 9.0.116 exposes sensitive session data to network-positioned attackers because the EncryptInterceptor - the clustering security control - can be bypassed due to a regression introduced by the fix for CVE-2026-29146. Listed in CISA KEV as actively exploited with a publicly available exploit, though EPSS sits at just 0.01% (1st percentile), indicating targeted rather than widespread automated exploitation. The confidentiality impact is rated High with no integrity or availability impact, consistent with CWE-311 (Missing Encryption of Sensitive Data).

Apache Information Disclosure Tomcat Apache Tomcat
NVD VulDB HeroDevs
CVSS 3.1
7.5
EPSS
0.0%
Threat
4.5
EPSS 0% CVSS 8.7
HIGH PATCH This Week

openssl_encrypt by jahlives (versions before 1.4.9) embeds an unkeyed SHA-256 digest of each plaintext document into the encrypted file's cleartext header, creating a passive plaintext-confirmation oracle. Any party who possesses an encrypted file - including unauthorized recipients of intercepted or leaked archives - can extract this hash without the encryption password and use it to verify guessed or known plaintexts via offline dictionary attacks. Additionally, because the hash is unkeyed and deterministic, identical source documents encrypted separately under different passwords produce matching header hashes, enabling cross-file correlation and fingerprinting that undermines the confidentiality guarantees users expect from file encryption. No public exploit code has been identified at time of analysis, and this vulnerability does not appear in CISA KEV.

Information Disclosure Openssl Encrypt
NVD GitHub
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

Sensitive-file exposure in the openssl-encrypt pip package (openssl_encrypt) at versions <= 1.4.8 stems from its 'Encrypted USB Workspace' feature writing a marker that falsely declares the workspace AES-256-GCM encrypted while the derived key is never applied and the directory remains in cleartext. Users who trust the branding and store files in the workspace leave them fully readable on the removable media, so anyone with physical possession of the USB device can recover the data. No public exploit identified at time of analysis and the flaw is not in CISA KEV, but the failure silently defeats the product's core security promise.

Hashicorp Information Disclosure OpenSSL +1
NVD GitHub
EPSS 0% CVSS 9.4
CRITICAL Act Now

Cleartext exposure of Wi-Fi credentials in DJI consumer and prosumer drones lets an attacker within Bluetooth range recover the drone's Wi-Fi SSID, PSK, and trusted-client UUID by passively sniffing unencrypted DUML-over-BLE messages exchanged during a normal DJI Fly connection or QuickTransfer handoff. This affects a broad range of current DJI models (Neo, Flip, Air 3/3S, Avata 2/360, Mavic 3 family, Mavic 4 Pro, and Mini 2 through Mini 5 Pro) below specific firmware versions. Recovered credentials grant the attacker access to the drone's internal Wi-Fi network and the ability to decrypt the operator's Wi-Fi traffic; no public exploit identified at time of analysis, and it is not listed in CISA KEV.

Information Disclosure Dji Neo Dji Neo 2 +14
NVD VulDB
EPSS 0% CVSS 7.5
HIGH This Week

CryptoPro Secure Disk for BitLocker before v7.7.4 stores initramfs contents in plaintext on disk, allowing a physical attacker to recover cryptographic keys and other secrets without defeating the encryption layer. The vulnerability was publicly disclosed at Black Hat USA 2026 by researcher Burch in a presentation titled 'The Cost of Obscurity,' suggesting the vendor's security model relied on implementation obscurity rather than cryptographic assurance. No public exploit identified at time of analysis; EPSS at 0.17% reflects the physical-access prerequisite that limits widespread automated exploitation.

Information Disclosure N A
NVD
EPSS 0% CVSS 7.0
HIGH This Week

Unencrypted data transmission in Samsung Smart Switch prior to version 3.7.72.6 exposes sensitive personal data to interception by adjacent network attackers. An attacker positioned on the same network segment can passively capture data flowing between devices during an active Smart Switch wireless transfer session. No public exploit has been identified and no CISA KEV listing exists, but the adjacent-network vector and low attack complexity make this a realistic threat on shared or untrusted Wi-Fi networks.

Information Disclosure Smart Switch
NVD VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Missing-encryption weaknesses in Cisco RoomOS software (the OS for Cisco Webex/Room collaboration endpoints) were fixed in an internal-hardening release covering multiple internally discovered issues grouped under CWE-311. Because sensitive data or communications are not adequately encrypted, network-positioned attackers could intercept or expose information handled by affected devices. There is no public exploit identified at time of analysis and this CVE is not in CISA KEV; EPSS is negligible at 0.06% (0th percentile), consistent with SSVC 'Exploitation: none.' Note the published CVSS 9.8 (C:H/I:H/A:H) sits uneasily against a CWE-311/Information-Disclosure classification, which normally implies a confidentiality-centric impact.

Cisco Information Disclosure Cisco Roomos Software
NVD VulDB
EPSS 0% CVSS 7.4
HIGH PATCH This Week

Authenticated principal impersonation in CoreWCF (versions >=1.9.0, <1.9.1) occurs because the SPNEGO SecurityContextToken proof key returned in the RequestSecurityTokenResponse (RSTR) is wrapped without confidentiality protection, allowing any on-path observer to recover it. An attacker who captures the unprotected handshake can impersonate the authenticated Windows principal for the SCT lifetime (~10 hours) and decrypt or forge subsequent WS-SecureConversation traffic. No public exploit identified at time of analysis, but the vendor-confirmed advisory (GHSA-2288-8h3r-cqgg) and CVSS 7.4 indicate a meaningful confidentiality/integrity exposure for affected .NET WCF replacement deployments.

Microsoft Information Disclosure
NVD GitHub
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

Silent TLS downgrade in Guzzle's built-in cURL handlers exposes proxy credentials and tunneled connection metadata to network interception when the application is configured to use an https:// proxy but runs against libcurl older than 7.50.2. Affected deployments see proxy authentication headers (Proxy-Authorization, CURLOPT_PROXYUSERPWD), CONNECT target host/port for tunneled HTTPS, and full request headers and bodies for plain HTTP requests transmitted without encryption - with no runtime error or warning from Guzzle or libcurl. No public exploit identified at time of analysis and no CISA KEV listing; however, the CVSS confidentiality impact is rated High (C:H) due to full credential exposure on the proxy leg.

PHP Information Disclosure
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Unencrypted secret storage in Jenkins 2.567 and earlier (LTS 2.555.2 and earlier) exposes credentials submitted via POST config.xml to any user holding Item/Extended Read permission or with read access to the Jenkins controller filesystem. Secrets that should be encrypted at rest are written as plaintext into job config.xml files, making them directly readable through Jenkins' built-in permission model or OS-level file access. No public exploit code has been identified and this CVE is not listed in the CISA KEV catalog, but the privileged insider and lateral-movement risk is significant for organizations embedding CI/CD credentials in job configurations.

Information Disclosure Jenkins Red Hat
NVD VulDB
EPSS 0% 4.5 CVSS 7.5
HIGH POC KEV PATCH THREAT Act Now

Missing encryption of cluster replication traffic in Apache Tomcat 11.0.20, 10.1.53, and 9.0.116 exposes sensitive session data to network-positioned attackers because the EncryptInterceptor - the clustering security control - can be bypassed due to a regression introduced by the fix for CVE-2026-29146. Listed in CISA KEV as actively exploited with a publicly available exploit, though EPSS sits at just 0.01% (1st percentile), indicating targeted rather than widespread automated exploitation. The confidentiality impact is rated High with no integrity or availability impact, consistent with CWE-311 (Missing Encryption of Sensitive Data).

Apache Information Disclosure Tomcat +1
NVD VulDB HeroDevs

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