Red Hat Security Advisory: squid:4 security update
Two denial of service vulnerabilities have been identified in Squid, a high-performance proxy caching server. These issues involve a heap use-after-free vulnerability and crafted ICP traffic handling. The vulnerabilities affect Squid versions included in Red Hat Enterprise Linux 8.8. Red Hat has issued a security advisory with updates to address these flaws.
AI Analysis
Technical Summary
Red Hat Product Security released an advisory (RHSA-2026:20580) for Squid version 4 included in Red Hat Enterprise Linux 8.8, addressing two denial of service vulnerabilities: CVE-2026-33526, a heap use-after-free in ICP handling, and CVE-2026-32748, denial of service via crafted ICP traffic. These vulnerabilities could cause service disruption by crashing the Squid proxy server. The advisory provides updated packages to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in Squid proxy servers by triggering heap use-after-free or malformed ICP traffic handling errors, leading to service crashes and potential disruption of proxy services.
Mitigation Recommendations
Red Hat has released updated packages for Squid in Red Hat Enterprise Linux 8.8 to fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:20580. Patch status is confirmed as an official fix available via Red Hat update channels.
Red Hat Security Advisory: squid:4 security update
Description
Two denial of service vulnerabilities have been identified in Squid, a high-performance proxy caching server. These issues involve a heap use-after-free vulnerability and crafted ICP traffic handling. The vulnerabilities affect Squid versions included in Red Hat Enterprise Linux 8.8. Red Hat has issued a security advisory with updates to address these flaws.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security released an advisory (RHSA-2026:20580) for Squid version 4 included in Red Hat Enterprise Linux 8.8, addressing two denial of service vulnerabilities: CVE-2026-33526, a heap use-after-free in ICP handling, and CVE-2026-32748, denial of service via crafted ICP traffic. These vulnerabilities could cause service disruption by crashing the Squid proxy server. The advisory provides updated packages to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in Squid proxy servers by triggering heap use-after-free or malformed ICP traffic handling errors, leading to service crashes and potential disruption of proxy services.
Mitigation Recommendations
Red Hat has released updated packages for Squid in Red Hat Enterprise Linux 8.8 to fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:20580. Patch status is confirmed as an official fix available via Red Hat update channels.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:20580
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-33526"]
- Cvss Version
- null
Threat ID: 6a16097ce29bf47b506487d6
Added to database: 05/26/2026, 20:58:36 UTC
Last enriched: 06/28/2026, 00:19:21 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 88
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