CVE-2026-109379 (CVSS 5.3)

Description

Cockpit CMS 2.14.1 contains an observable timing discrepancy vulnerability that allows unauthenticated attackers to enumerate accounts due to an incomplete timing fix in /auth/check. Attackers can post login attempts and measure response times, since existing accounts incur two bcrypt operations versus one, revealing valid usernames and email addresses.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0035

Probability of exploitation

0.27%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-208 CWE-208

References

Other References

https://github.com/Cockpit-HQ/Cockpit https://github.com/Cockpit-HQ/Cockpit/blob/2.14.1/modules/App/Controller/Auth.php https://github.com/Cockpit-HQ/Cockpit/blob/2.14.1/modules/App/Helper/Auth.php https://github.com/Cockpit-HQ/Cockpit/commit/5d65ae7b63a261a63e8809e5fba857ef3eadb2ac https://github.com/Cockpit-HQ/Cockpit/issues/328 https://www.vulncheck.com/advisories/cockpit-cms-2.14.1-account-enumeration-via-timing-discrepancy-in-auth-check

Frequently Asked Questions

What is CVE-2026-109379? +

Cockpit CMS 2.14.1 contains an observable timing discrepancy vulnerability that allows unauthenticated attackers to enumerate accounts due to an incomplete timing fix in /auth/check. Attackers can post login attempts and measure response times, since existing accounts incur two bcrypt operations versus one, revealing valid usernames and email addresses. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-109379? +

CVE-2026-109379 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0035, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-109379? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-109379