Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | squid |
Timeline
- Apr 1, 2026 CVE Published
- Apr 1, 2026 Distribution Patch
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3184 squid security update 1 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: squid Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-33526 CVE-2026-32748 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:6301 Comment: CVSS (Max): 7.5 CVE-2026-33526 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 1.3% (79th) CVE-2026-33526 2026-03-31 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:6301 - Security Advisory Issued: 2026-03-31 Updated: 2026-03-31 Synopsis Squid security update Type/Severity Security Advisory: Important Topic An update for squid is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fix(es): o squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526) o 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products o Red Hat Enterprise Linux for x86_64 9 x86_64 o Red Hat Enterprise Linux for IBM z Systems 9 s390x o Red Hat Enterprise Linux for Power, little endian 9 ppc64le o Red Hat Enterprise Linux for ARM 64 9 aarch64 Fixes o BZ - 2451574 - CVE-2026-33526 squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling o BZ - 2451577 - CVE-2026-32748 Squid: Squid: Denial of Service via crafted ICP traffic CVEs o CVE-2026-32748 o CVE-2026-33526 References o https://access.redhat.com/security/updates/classification/#important - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | squid |