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openssl_encrypt CVE-2026-74891

| EUVDEUVD-2026-60110 HIGH
Use of Hard-coded Credentials (CWE-798)
2026-08-17 VulnCheck GHSA-c472-7fxr-552c
Information Disclosure PostgreSQL Authentication Bypass Openssl Encrypt
8.7
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.5 MEDIUM

Description specifies same-network access, mapping to AV:A; hardcoded credentials require no privileges; impact is confidentiality-only with no integrity or availability effect described.

3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Aug 17, 2026 - 13:07 vuln.today
Patch available
Aug 17, 2026 - 12:01 EUVD
CVE Published
Aug 17, 2026 - 11:04 cve.org
HIGH 8.7

DescriptionCVE.org

openssl_encrypt versions before 1.4.0 contain hardcoded database credentials in standalone server configuration files. Attackers on the same network can access PostgreSQL databases using well-known default credentials to retrieve sensitive data.

Articles & Coverage 1

News 3 New PostgreSQL Vulnerabilities - 1 Critical, 2 High Severity Aug 18, 2026

AnalysisAI

Hardcoded PostgreSQL credentials embedded in openssl_encrypt standalone server configuration files expose backend databases to unauthorized access in all versions before 1.4.0. Network-adjacent attackers who obtain the well-known static credentials - trivially available from the distributed software package or public advisory - can authenticate directly to the PostgreSQL instance and retrieve sensitive stored data without any legitimate account. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Gain adjacent network access
Delivery
Scan for PostgreSQL port 5432/TCP on target host
Exploit
Extract hardcoded credentials from public GHSA advisory
Execution
Authenticate to PostgreSQL with static credentials
Persist
Query database tables
Impact
Exfiltrate sensitive data
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Vulnerability AssessmentAI

Exploitation The openssl_encrypt standalone server component must be deployed and its associated PostgreSQL instance must be reachable from the attacker's network segment - this vulnerability does not affect installations using openssl_encrypt solely as a PHP library without the standalone server mode. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The assigned CVSS 4.0 base score of 8.7 reflects AV:N (network), AC:L, PR:N, UI:N, and VC:H - a very high-severity profile on paper. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A network-adjacent attacker scans for PostgreSQL port 5432/TCP on hosts within the same network segment as a target running the openssl_encrypt standalone server. Using the hardcoded credentials published in the GHSA advisory, the attacker authenticates directly to the database using any standard PostgreSQL client (e.g., psql), then queries tables to extract sensitive application data - no exploit tooling, brute-forcing, or credential theft is required beyond network connectivity and knowledge of the publicly disclosed static credentials.
Remediation Upgrade openssl_encrypt to version 1.4.0 or later, which resolves the hardcoded credential issue per the vendor advisory at https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-v4vm-4xf2-fhqj. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory all systems running openssl_encrypt and identify installed versions to determine exposure scope. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-74891 vulnerability details – vuln.today
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