PT-2026-44930 · Liboqs · Liboqs

Zulfff · Published 2026-05-29 · Updated 2026-06-04 · CVE-2026-44518

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions liboqs versions prior to 0.16.0

Description An out-of-bounds read exists in the XMSS and XMSS^MT stateful signature verification code. This occurs when the verification function is called with a signature buffer shorter than the expected size for the specified parameter set, as the implementation fails to validate the caller-supplied length and reads past the buffer end. The out-of-bounds bytes are used only for internal hash computation and are not returned to the caller, preventing data leakage. The primary impact is a potential denial of service through a process crash if the read operation accesses an unmapped memory page.

Recommendations Update to version 0.16.0.

Fix

DoS

RCE

Out of bounds Read

Weakness Enumeration

CWE-20

CWE-125

Related Identifiers

CVE-2026-44518

Affected Products

Liboqs

References · 6

• https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-wf7v-fhxj-73m2 · Vendor Advisory
• https://github.com/open-quantum-safe/liboqs/commit/ef70dea7c85e5637f37828d75e5b9bb29dbfe513 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-44518 · Security Note
• https://t.me/cveNotify/166061 · Telegram Post
• https://t.me/cveNotify/166066 · Telegram Post
• https://twitter.com/CVEnew/status/2060470690164162591 · Twitter Post