CWE-90

LDAP Injection

20 CVEs Avg CVSS 6.8 MITRE
3
CRITICAL
6
HIGH
8
MEDIUM
2
LOW
3
POC
0
KEV

Monthly

CVE-2026-39962 HIGH This Week

LDAP injection in MISP (Malware Information Sharing Platform) versions prior to 2.5.36 enables unauthenticated attackers to bypass authentication and execute unauthorized LDAP queries. The vulnerability exists in ApacheAuthenticate.php when administrators configure apacheEnv to use user-controlled server variables instead of REMOTE_USER in proxy deployments. Attackers manipulate unsanitized username values to inject special characters into LDAP search filters, potentially gaining unauthorized access to the threat intelligence platform. No public exploit identified at time of analysis.

Authentication Bypass Ldap Code Injection PHP Misp
NVD GitHub
CVSS 4.0
8.8
EPSS
0.1%
CVE-2026-34578 HIGH This Week

LDAP filter injection in OPNsense firewall allows unauthenticated attackers to enumerate valid LDAP usernames and bypass group membership restrictions via the WebGUI login page. Affects OPNsense versions prior to 26.1.6. The vulnerability stems from failure to escape user-supplied input before insertion into LDAP search filters, enabling metacharacter injection. Attackers can authenticate as any LDAP user with known credentials, circumventing Extended Query group membership controls. No public exploit identified at time of analysis.

Ldap Authentication Bypass Code Injection
NVD GitHub
CVSS 3.1
8.2
EPSS
0.2%
CVE-2026-29138 MEDIUM This Month

SEPPmail Secure Email Gateway before version 15.0.3 allows remote attackers to impersonate other users by claiming their PGP signatures through a specially crafted email address, enabling signature forgery and identity spoofing in encrypted email communications. The vulnerability exploits LDAP injection mechanisms to manipulate signature verification, affecting all versions prior to 15.0.3. No CVSS score is available, and exploitation status remains unconfirmed from provided data.

Information Disclosure Ldap Code Injection
NVD
CVSS 4.0
6.3
EPSS
0.0%
CVE-2026-29131 MEDIUM This Month

SEPPmail Secure Email Gateway before version 15.0.3 allows remote attackers to read encrypted email contents intended for other users by crafting specially malformed email addresses that exploit LDAP injection in the recipient validation process. This information disclosure vulnerability affects all versions prior to 15.0.3 and requires only network access to send a specially crafted email, making it a practical attack vector against organizations using vulnerable SEPPmail deployments.

Information Disclosure Ldap Code Injection
NVD
CVSS 4.0
4.9
EPSS
0.0%
CVE-2026-27860 LOW POC PATCH Monitor

Open-Xchange Dovecot Pro contains an LDAP filter injection vulnerability in its authentication module that allows remote unauthenticated attackers to inject arbitrary LDAP filters when the auth_username_chars configuration parameter is left empty, potentially enabling authentication bypass and reconnaissance of LDAP directory structures. The vulnerability carries a low CVSS score of 3.7 due to high attack complexity requirements, and no public exploit code has been identified at the time of analysis.

Ldap Authentication Bypass Code Injection
NVD VulDB GitHub
CVSS 3.1
3.7
EPSS
0.0%
CVE-2026-33751 MEDIUM PATCH This Month

n8n contains an LDAP injection vulnerability in the LDAP node's filter escape logic that allows LDAP metacharacters to pass through unescaped when user-controlled input is interpolated into LDAP search filters. This affects n8n versions prior to 1.123.27, 2.13.3, and 2.14.1, enabling attackers to manipulate LDAP queries to retrieve unintended directory records or bypass authentication controls implemented within workflows. The vulnerability requires specific workflow configuration (LDAP node receiving external user input via expressions) and has not been publicly reported as actively exploited, though no proof-of-concept availability is explicitly confirmed across available intelligence sources.

Ldap Authentication Bypass Code Injection
NVD GitHub VulDB
CVSS 4.0
6.3
EPSS
0.1%
CVE-2026-33289 HIGH This Week

An LDAP injection vulnerability in SuiteCRM's authentication flow allows attackers to manipulate LDAP queries by injecting control characters into user-supplied input, potentially leading to authentication bypass or information disclosure. The vulnerability affects SuiteCRM versions prior to 7.15.1 and 8.9.3, which are open-source CRM systems widely deployed in enterprise environments. While no active exploitation has been reported (not in CISA KEV), the network-exploitable nature and potential for authentication bypass makes this a serious concern for organizations using affected versions.

Authentication Bypass Information Disclosure Ldap Code Injection
NVD GitHub VulDB
CVSS 3.1
8.8
EPSS
0.2%
CVE-2026-31828 HIGH PATCH This Week

Parse Server's LDAP authentication adapter fails to properly sanitize user input in Distinguished Names and group filters, allowing authenticated attackers to inject LDAP commands and bypass group-based access controls. This vulnerability enables privilege escalation for any valid LDAP user to gain membership in restricted groups, affecting deployments that rely on LDAP group policies for authorization. Patches are available in versions 9.5.2-alpha.13 and 8.6.26.

Node.js Dns Ldap Privilege Escalation Parse Server
NVD GitHub VulDB
CVSS 3.1
8.8
EPSS
0.1%
CVE-2026-25560 CRITICAL PATCH Act Now

WeKan (open-source kanban) prior to 8.19 has an LDAP filter injection vulnerability enabling authentication bypass through crafted LDAP login attempts.

Ldap Wekan
NVD GitHub
CVSS 3.1
9.8
EPSS
0.1%
CVE-2026-1498 Monitor

An LDAP Injection vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to retrieve sensitive information from a connected LDAP authentication server through an exposed authentication or management web interface.

Ldap
NVD
EPSS
0.1%
CVE-2026-39962
EPSS 0% CVSS 8.8
HIGH This Week

LDAP injection in MISP (Malware Information Sharing Platform) versions prior to 2.5.36 enables unauthenticated attackers to bypass authentication and execute unauthorized LDAP queries. The vulnerability exists in ApacheAuthenticate.php when administrators configure apacheEnv to use user-controlled server variables instead of REMOTE_USER in proxy deployments. Attackers manipulate unsanitized username values to inject special characters into LDAP search filters, potentially gaining unauthorized access to the threat intelligence platform. No public exploit identified at time of analysis.

Authentication Bypass Ldap Code Injection +2
NVD GitHub
CVE-2026-34578
EPSS 0% CVSS 8.2
HIGH This Week

LDAP filter injection in OPNsense firewall allows unauthenticated attackers to enumerate valid LDAP usernames and bypass group membership restrictions via the WebGUI login page. Affects OPNsense versions prior to 26.1.6. The vulnerability stems from failure to escape user-supplied input before insertion into LDAP search filters, enabling metacharacter injection. Attackers can authenticate as any LDAP user with known credentials, circumventing Extended Query group membership controls. No public exploit identified at time of analysis.

Ldap Authentication Bypass Code Injection
NVD GitHub
CVE-2026-29138
EPSS 0% CVSS 6.3
MEDIUM This Month

SEPPmail Secure Email Gateway before version 15.0.3 allows remote attackers to impersonate other users by claiming their PGP signatures through a specially crafted email address, enabling signature forgery and identity spoofing in encrypted email communications. The vulnerability exploits LDAP injection mechanisms to manipulate signature verification, affecting all versions prior to 15.0.3. No CVSS score is available, and exploitation status remains unconfirmed from provided data.

Information Disclosure Ldap Code Injection
NVD
CVE-2026-29131
EPSS 0% CVSS 4.9
MEDIUM This Month

SEPPmail Secure Email Gateway before version 15.0.3 allows remote attackers to read encrypted email contents intended for other users by crafting specially malformed email addresses that exploit LDAP injection in the recipient validation process. This information disclosure vulnerability affects all versions prior to 15.0.3 and requires only network access to send a specially crafted email, making it a practical attack vector against organizations using vulnerable SEPPmail deployments.

Information Disclosure Ldap Code Injection
NVD
CVE-2026-27860
EPSS 0% CVSS 3.7
LOW POC PATCH Monitor

Open-Xchange Dovecot Pro contains an LDAP filter injection vulnerability in its authentication module that allows remote unauthenticated attackers to inject arbitrary LDAP filters when the auth_username_chars configuration parameter is left empty, potentially enabling authentication bypass and reconnaissance of LDAP directory structures. The vulnerability carries a low CVSS score of 3.7 due to high attack complexity requirements, and no public exploit code has been identified at the time of analysis.

Ldap Authentication Bypass Code Injection
NVD VulDB GitHub
CVE-2026-33751
EPSS 0% CVSS 6.3
MEDIUM PATCH This Month

n8n contains an LDAP injection vulnerability in the LDAP node's filter escape logic that allows LDAP metacharacters to pass through unescaped when user-controlled input is interpolated into LDAP search filters. This affects n8n versions prior to 1.123.27, 2.13.3, and 2.14.1, enabling attackers to manipulate LDAP queries to retrieve unintended directory records or bypass authentication controls implemented within workflows. The vulnerability requires specific workflow configuration (LDAP node receiving external user input via expressions) and has not been publicly reported as actively exploited, though no proof-of-concept availability is explicitly confirmed across available intelligence sources.

Ldap Authentication Bypass Code Injection
NVD GitHub VulDB
CVE-2026-33289
EPSS 0% CVSS 8.8
HIGH This Week

An LDAP injection vulnerability in SuiteCRM's authentication flow allows attackers to manipulate LDAP queries by injecting control characters into user-supplied input, potentially leading to authentication bypass or information disclosure. The vulnerability affects SuiteCRM versions prior to 7.15.1 and 8.9.3, which are open-source CRM systems widely deployed in enterprise environments. While no active exploitation has been reported (not in CISA KEV), the network-exploitable nature and potential for authentication bypass makes this a serious concern for organizations using affected versions.

Authentication Bypass Information Disclosure Ldap +1
NVD GitHub VulDB
CVE-2026-31828
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Parse Server's LDAP authentication adapter fails to properly sanitize user input in Distinguished Names and group filters, allowing authenticated attackers to inject LDAP commands and bypass group-based access controls. This vulnerability enables privilege escalation for any valid LDAP user to gain membership in restricted groups, affecting deployments that rely on LDAP group policies for authorization. Patches are available in versions 9.5.2-alpha.13 and 8.6.26.

Node.js Dns Ldap +2
NVD GitHub VulDB
CVE-2026-25560
EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

WeKan (open-source kanban) prior to 8.19 has an LDAP filter injection vulnerability enabling authentication bypass through crafted LDAP login attempts.

Ldap Wekan
NVD GitHub
CVE-2026-1498
EPSS 0%
Monitor

An LDAP Injection vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to retrieve sensitive information from a connected LDAP authentication server through an exposed authentication or management web interface.

Ldap
NVD

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