What is CVE-2026-31959?

CVE-2026-31959 is a medium-severity vulnerability in Anchore Quill, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-03-11.

How severe is CVE-2026-31959?

Medium severity. CVSS v3 base score is 5.3 out of 10.

SSRF in Anchore Quill

CVE-2026-31959

Quill provides simple mac binary signing and notarization from any platform. Quill before version v0.7.1 contains a Server-Side Request Forgery (SSRF) vulnerability when attempting to fetch the Apple notarization submission logs. Exploitat…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Anchore Quill — versions < 0.7.1

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

https://github.com/anchore/quill/security/advisories/GHSA-7q3q-5px6-4c5p (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-31959?: CVE-2026-31959 is a medium-severity vulnerability in Anchore Quill, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-03-11.
How severe is CVE-2026-31959?: Medium severity. CVSS v3 base score is 5.3 out of 10.