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CVE-2026-89266

stb_vorbis through 1.22 heap buffer overflow via codebook multiplicands

CVSS 4.0 8.8 HIGHCVSS 3.1 8.2 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-89266

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-89266

Published

stb_vorbis

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "nothings",
                    "product": "stb_vorbis",
                    "repo": "https://github.com/nothings/stb",
                    "packageURL": "pkg:github/nothings/stb",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "1.22",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON