CVE-2026-89266 stb_vorbis - Buffer Overflow

stb_vorbis through 1.22 contains a buffer overflow caused by truncation of codebook multiplicands allocation size from size_t to int in start_decoder(), letting attackers trigger heap corruption or crashes via crafted Ogg Vorbis files, exploit requires crafted file.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.64% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Published
12 September 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Update to the latest version beyond 1.22.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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