CVE-2026-89266

HIGH CVSS 4.0: 8.8 EPSS 0.64%
Updated Sep 25, 2026
Stb_Vorbis_Project
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions before 1.22
Type CWE-787 (Out-of-bounds Write)
Vendor Stb_Vorbis_Project
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Stb_Vorbis_Project Stb_Vorbis
cpe:2.3:a:stb_vorbis_project:stb_vorbis:*:*:*:*:*:*:*:*
— <= 1.22