CVE-2026-89266
HIGHCVSS 8.2Description
stb_vorbis through 1.22 contains a heap buffer overflow in start_decoder() where the codebook multiplicands allocation size is truncated from size_t to int. Attackers can craft a malicious Ogg Vorbis file with large entries and dimensions values to trigger out-of-bounds writes, causing process crashes or heap corruption.
Timeline
Published:September 12th, 2026 12:17 AM
Last modified:September 12th, 2026 12:17 AM
CVSS Scoring
CVSS v3: 8.2 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://github.com/nothings/stb
- https://github.com/nothings/stb/blob/2c980bb59875b0d32144a71867fbdebb2f77cd20/stb_vorbis.c#L3878-L3880
- https://github.com/nothings/stb/blob/2c980bb59875b0d32144a71867fbdebb2f77cd20/stb_vorbis.c#L950
- https://github.com/nothings/stb/issues/1928
- https://github.com/nothings/stb/issues/1933
- https://github.com/nothings/stb/issues/1947
- https://www.vulncheck.com/advisories/stb-vorbis-through-1.22-heap-buffer-overflow-via-codebook-multiplicands
Source: NIST NVD · Data may lag official sources by up to one minute