Vulnerability · Published Apr 2, 2026 · Assigned by VulDB
CVE-2026-5317Nothings stb stb_vorbis.c start_decoder out-of-bounds write
Medium 6.3
In plain English
A medium-severity out-of-bounds write in stb from Nothings. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Official description
A security flaw has been discovered in Nothings stb up to 1.22. This affects the function start_decoder of the file stb_vorbis.c. The manipulation results in out-of-bounds write. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libstb | no fix listed | DEBIAN-CVE-2026-5317 |
| Debian:13 | libstb | no fix listed | DEBIAN-CVE-2026-5317 |
| Debian:14 | libstb | no fix listed | DEBIAN-CVE-2026-5317 |
| Ubuntu:22.04:LTS | libstb | no fix listed | UBUNTU-CVE-2026-5317 |
| Ubuntu:24.04:LTS | libstb | no fix listed | UBUNTU-CVE-2026-5317 |
| Ubuntu:25.10 | libstb | no fix listed | UBUNTU-CVE-2026-5317 |
| Ubuntu:26.04:LTS | libstb | no fix listed | UBUNTU-CVE-2026-5317 |
| Ubuntu:26.10 | libstb | no fix listed | UBUNTU-CVE-2026-5317 |
Affected products (as reported)
Weakness: CWE-787, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-354649 | Nothings stb stb_vorbis.c start_decoder out-of-bounds write vdb-entry, technical-description
- VDB-354649 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #780561 | nothings stb (stb_vorbis.c) ≤ 1.22 Out-of-bounds Write, Integer Overflow third-party-advisory
- https://gist.github.com/d0razi/2ff8a0e812f74dd6fe7f2843931bb90c exploit