Hardcoded Database Credentials in OpenSSL Encrypt Config

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.

Casky was already ahead

This CVE exploits attack patterns that Casky's 233matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-74891 represents a critical credential exposure vulnerability affecting openssl_encrypt versions before 1.4.0. The flaw embeds database credentials directly into standalone server configuration files, creating a persistent authentication backdoor. Any attacker with network access to the same segment can leverage well-known default credentials to connect directly to PostgreSQL databases, bypassing application-layer security controls entirely. This vulnerability is particularly dangerous because configuration files are often overlooked in security audits, and the use of default credentials suggests minimal post-deployment hardening. Organizations running vulnerable versions in cloud environments, containerized deployments, or on-premises networks with lateral movement potential face immediate risk of unauthorized data access and potential data exfiltration at scale.

Casky's 233 mapped skills detect this vulnerability pattern through MITRE ATT&CK technique TA0006 (Credential Access), with Claude's extended reasoning identifying the specific attack chain: reconnaissance of exposed config files, credential extraction, and unauthorized database authentication. Practitioners using Casky would observe findings highlighting suspicious network connections to PostgreSQL ports (5432) from unexpected sources, configuration file read events in forensic logs, and authentication attempts using default credentials. The platform's skill correlation would surface related indicators such as CWE-798 (Use of Hardcoded Credentials) violations in code analysis, failed and successful database login attempts in security event logs, and lateral movement patterns characteristic of post-compromise database reconnaissance. This multi-layered detection approach enables practitioners to identify both vulnerable deployments and active exploitation attempts before data loss occurs.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

233 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-74891.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0006

Investigate the attack patterns behind CVE-2026-74891

Casky has 233 skills that investigate the attack patterns behind CVE-2026-74891. Run one and get CVSS-scored findings in 3 minutes.

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