Out-of-bounds Read in Squid-cache Squid
CVE-2026-33515
Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory pot…
Vulnerability class: Buffer Overflow
EPSS: 0.010 (60.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Squid-cache Squid — versions < 7.5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-33515?
- CVE-2026-33515 is a medium-severity vulnerability in Squid-cache Squid, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-03-26.
- How severe is CVE-2026-33515?
- Medium severity. CVSS v3 base score is 6.5 out of 10.