{"cve":"CVE-2009-2855","nvd":{"published":"2009-08-18T21:00:00.640","modified":"2026-06-16T23:10:22.010","status":"Modified","description":"The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982","http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31%3Bfilename=diff%3Batt=1%3Bbug=534982","http://www.openwall.com/lists/oss-security/2009/07/20/10","http://www.openwall.com/lists/oss-security/2009/08/03/3","http://www.openwall.com/lists/oss-security/2009/08/04/6"],"products":["squid-cache:squid"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-2855","score":0.34031,"percentile":0.98397,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}