Debian: DSA-6017-1 HAProxy Important DoS CVE-2025-11230
debian
October 3, 2025
Oula Kivalo reported that HAProxy, a fast and reliable load balancing reverse proxy, is prone to a denial of service vulnerability when parsing JSON numbers
Topics Covered
Summary
For the oldstable distribution (bookworm), this problem has been fixed
in version 2.6.12-1+deb12u3.
For the stable distribution (trixie), this problem has been fixed in
version 3.0.11-1+deb13u1.
We recommend that you upgrade your haproxy packages.
For the detailed security status of haproxy please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/haproxy
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
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Severity
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Critical
Package: haproxy
CVE ID: CVE-2025-11230
Topics Covered
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