Generated remediation guidance and an executive summary. No account required.
Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.
Cite this page
CVE-2023-46724. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2023-46724
Use CWE-125, Squid-Cache vendor hub and Squid product page to widen CVE-2023-46724 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2025-62168, CVE-2025-54574 and CVE-2026-33526 for nearby disclosures in the same product family.