Red Hat Security Advisory: squid security update
Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fix(es): * squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526) * Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
Red Hat Product Security has issued an advisory for two denial of service vulnerabilities in Squid related to ICP (Internet Cache Protocol) handling. CVE-2026-33526 is a heap use-after-free vulnerability, and CVE-2026-32748 involves denial of service via crafted ICP traffic. These vulnerabilities affect Squid packages in Red Hat Enterprise Linux 7 Extended Lifecycle Support across multiple architectures including x86_64, s390x, ppc64, and ppc64le. The advisory references updated packages (squid-3.5.20-17.el7_9.16) that fix these issues. No CVSS scores are provided in the advisory.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in Squid proxy servers by triggering heap use-after-free or by sending crafted ICP traffic. This could disrupt proxy services and impact availability of web caching and proxy functionality on affected Red Hat Enterprise Linux 7 Extended Lifecycle Support systems.
Mitigation Recommendations
Red Hat has released updated Squid packages (version 3.5.20-17.el7_9.16) for Red Hat Enterprise Linux 7 Extended Lifecycle Support that address these vulnerabilities. Users should apply these official security updates as detailed in Red Hat advisory RHSA-2026:8880. Patch status is confirmed as fixed in these updated packages. No additional mitigation steps are specified or required beyond applying the update.
Red Hat Security Advisory: squid security update
Description
Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fix(es): * squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526) * Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security has issued an advisory for two denial of service vulnerabilities in Squid related to ICP (Internet Cache Protocol) handling. CVE-2026-33526 is a heap use-after-free vulnerability, and CVE-2026-32748 involves denial of service via crafted ICP traffic. These vulnerabilities affect Squid packages in Red Hat Enterprise Linux 7 Extended Lifecycle Support across multiple architectures including x86_64, s390x, ppc64, and ppc64le. The advisory references updated packages (squid-3.5.20-17.el7_9.16) that fix these issues. No CVSS scores are provided in the advisory.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in Squid proxy servers by triggering heap use-after-free or by sending crafted ICP traffic. This could disrupt proxy services and impact availability of web caching and proxy functionality on affected Red Hat Enterprise Linux 7 Extended Lifecycle Support systems.
Mitigation Recommendations
Red Hat has released updated Squid packages (version 3.5.20-17.el7_9.16) for Red Hat Enterprise Linux 7 Extended Lifecycle Support that address these vulnerabilities. Users should apply these official security updates as detailed in Red Hat advisory RHSA-2026:8880. Patch status is confirmed as fixed in these updated packages. No additional mitigation steps are specified or required beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:8880
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-33526"]
- Cvss Version
- null
Threat ID: 6a160984e29bf47b50650e4d
Added to database: 05/26/2026, 20:58:44 UTC
Last enriched: 06/25/2026, 23:04:22 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 62
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