Known Vulnerabilities for Squid by Squid-cache

Listed below are 10 of the newest known vulnerabilities associated with "Squid" by "Squid-cache".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-33526 Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, Squid is vulnerable to Denial of Serv... Not Provided 2026-03-26 2026-03-26
CVE-2026-33515 Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of b... Not Provided 2026-03-26 2026-03-26
CVE-2021-33620 Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clie... 6.5 - MEDIUM 2021-05-28 2023-11-07
CVE-2021-31808 An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Deni... 6.5 - MEDIUM 2021-05-27 2023-11-07
CVE-2021-31807 An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achi... 6.5 - MEDIUM 2021-06-08 2023-11-07
CVE-2021-31806 An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Deni... 6.5 - MEDIUM 2021-05-27 2023-11-07
CVE-2021-28662 An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header ove... 6.5 - MEDIUM 2021-05-27 2023-11-07
CVE-2021-28652 An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of ... 4.9 - MEDIUM 2021-05-27 2023-11-07
CVE-2021-28651 An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of serv... 7.5 - HIGH 2021-05-27 2023-11-07
CVE-2021-28116 Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds r... 5.3 - MEDIUM 2021-03-09 2023-11-07
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationSquid-cacheSquid5.0.4AllAllAll
ApplicationSquid-cacheSquid5.0.3AllAllAll
ApplicationSquid-cacheSquid5.0.2AllAllAll
ApplicationSquid-cacheSquid5.0.1AllAllAll
ApplicationSquid-cacheSquid5.0AllAllAll
ApplicationSquid-cacheSquid4.9AllAllAll
ApplicationSquid-cacheSquid4.8AllAllAll
ApplicationSquid-cacheSquid4.7AllAllAll
ApplicationSquid-cacheSquid4.6AllAllAll
ApplicationSquid-cacheSquid4.4AllAllAll
ApplicationSquid-cacheSquid4.3AllAllAll
ApplicationSquid-cacheSquid4.13AllAllAll
ApplicationSquid-cacheSquid4.12AllAllAll
ApplicationSquid-cacheSquid4.10AllAllAll
ApplicationSquid-cacheSquid4.0.9AllAllAll
ApplicationSquid-cacheSquid4.0.8AllAllAll
ApplicationSquid-cacheSquid4.0.6AllAllAll
ApplicationSquid-cacheSquid4.0.5AllAllAll
ApplicationSquid-cacheSquid4.0.4AllAllAll
ApplicationSquid-cacheSquid4.0.3AllAllAll
Results limited to 20 most recent known configurations
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report