VULNERABILITY INTELLIGENCE
CVE-2021-31808
CVSS score6.5 MEDIUM
EPSS probability5.34%
CISA KEVNot currently listed
Published2021-05-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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 Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this.
Weakness classification
- nvd@nist.gov: CWE-190
Primary references
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Exploit, Patch, Vendor Advisory
- cve@mitre.org — Patch, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Vendor Advisory