PT-2026-24465 · Quinn · Quinn

Revofusion · Published 2026-03-09 · Updated 2026-05-11 · CVE-2026-31812

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Quinn versions prior to 0.11.14

Description A remote, unauthenticated attacker can cause a denial of service in applications using vulnerable Quinn versions by sending a specially crafted QUIC Initial packet containing malformed quic transport parameters. The issue occurs because attacker-controlled variable-length integers (varints) are decoded using unwrap(), and truncated encodings lead to a panic. This is exploitable over the network with a single packet and requires no prior trust or authentication.

Recommendations Update to version 0.11.14 or later.

Exploit

Fix

DoS

Weakness Enumeration

CWE-248

Related Identifiers

CVE-2026-31812

GHSA-6XVM-J4WR-6V98

OPENSUSE-SU-2026:10380-1

OPENSUSE-SU-2026:10382-1

OPENSUSE-SU-2026:10383-1

OPENSUSE-SU-2026:10384-1

OPENSUSE-SU-2026:20569-1

RUSTSEC-2026-0037

SUSE-RU-2026:1001-1

SUSE-SU-2026:1337-1

SUSE-SU-2026:1415-1

SUSE-SU-2026:21357-1

Affected Products

Quinn

References · 36

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31812.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2026:10383-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31812 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-6xvm-j4wr-6v98 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31812 · Security Note
• https://osv.dev/vulnerability/SUSE-RU-2026:1001-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20569-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10384-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-31812 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10380-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10382-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31812 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31812 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:1337-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31812 · Vendor Advisory