CVE-2026-124431: Auth Bypass (CVSS 4.3)

Description

Craft CMS from 5.10.0 before 5.11.2 contains an authorization bypass vulnerability that allows authenticated low-privileged users to browse volumes they lack permissions for. Attackers can delete a linked asset and use the replacement volume browser modal to view directory structures of all volumes, though not file contents.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0030

Probability of exploitation

0.23%

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-862 Missing Authorization

References

Other References

https://github.com/craftcms/cms/security/advisories/GHSA-hvp5-pwxx-2752 https://www.vulncheck.com/advisories/craft-cms-5.10.0-before-5.11.2-unauthorized-volume-browsing-via-asset-replacement

Frequently Asked Questions

What is CVE-2026-124431? +

Craft CMS from 5.10.0 before 5.11.2 contains an authorization bypass vulnerability that allows authenticated low-privileged users to browse volumes they lack permissions for. Attackers can delete a linked asset and use the replacement volume browser modal to view directory structures of all volumes, though not file contents. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-124431? +

CVE-2026-124431 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0030, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-124431? +

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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