Description
A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. However, Squid may grow a cached HTTP response header beyond the configured maximum size, causing a stall or crash of the worker process when a large header is retrieved from the disk cache, resulting in a denial of service.
Affected products
squid-cache: squid; redhat: enterprise linux
References10
- github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2… Vendor Advisory
- github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2… Vendor Advisory
- access.redhat.com/errata/RHSA-2023:7465
- access.redhat.com/errata/RHSA-2023:7668
- access.redhat.com/errata/RHSA-2024:0072
- access.redhat.com/errata/RHSA-2024:0397
- access.redhat.com/errata/RHSA-2024:0771
- access.redhat.com/errata/RHSA-2024:0772
- access.redhat.com/errata/RHSA-2024:0773
- access.redhat.com/errata/RHSA-2024:1153
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 3% percentile: 89 · as of 5 November 2026
- CWE
- CWE-755
Could this be exploited in your environment?
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