What is CVE-2026-50012?

CVE-2026-50012 is a medium-severity vulnerability in Squid-cache Squid, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2026-07-16.

How severe is CVE-2026-50012?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Squid-cache Squid

CVE-2026-50012

Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H.

Affected products

Squid-cache Squid — versions < 7.6

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-50012?: CVE-2026-50012 is a medium-severity vulnerability in Squid-cache Squid, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2026-07-16.
How severe is CVE-2026-50012?: Medium severity. CVSS v3 base score is 5.5 out of 10.