Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 allows remote attackers to cause a denial of service via malformed requests…

Description

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 allows remote attackers to cause a denial of service via malformed requests including (1) "missing or mismatched protocol identifier," (2) missing or negative status value," (3) "missing version," or (4) "missing or invalid status number," related to (a) HttpMsg.cc and (b) HttpReply.cc.

Scores

EPSS (exploitation in 30 days)

56.9% · top 0.9% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (8)

• 1022607 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• http://www.squid-cache.org/Versions/v3/3.1/changesets/b9661.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
• 35812 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• ADV-2009-2013 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 36007 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.squid-cache.org/Advisories/SQUID-2009_2.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
• MDVSA-2009:161 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• MDVSA-2009:178 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-2622](https://trackcve.app/badge/CVE-2009-2622.svg)](https://trackcve.app/cve/CVE-2009-2622)

Record last updated 7 Aug 2024, 05:59 UTC.