CVE-2023-5824
highA flaw was found in Squid.
Vendor / product: Squid-cache — squid
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-11-03 08:15
Modified: 2026-11-04 21:17
NVD status: Modified
Last synced 4 hours ago
Verified against the source API 2026-11-04 21:37 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
squid-cache / squid <6.4
redhat / enterprise_linux 6.0, 7.0, 8.0, 9.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://access.redhat.com/errata/RHSA-2023:7465 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2023:7668 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0072 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0397 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0771 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0772 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0773 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:1153 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2023-5824 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2245914 secalert@redhat.com
- https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2023:7465 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2023:7668 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0072 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0397 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0771 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0772 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0773 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:1153 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/security/cve/CVE-2023-5824 af854a3a-2127-422b-91ae-364da2661108
- https://bugzilla.redhat.com/show_bug.cgi?id=2245914 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255 af854a3a-2127-422b-91ae-364da2661108
- https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html af854a3a-2127-422b-91ae-364da2661108
- https://security.netapp.com/advisory/ntap-20231130-0003/ af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 21:37 UTC · record ↗