Nothings stb up to 1.22 stb_vorbis.c start_decoder out-of-bounds write

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Nothings stb up to 1.22. This impacts the function start_decoder of the file stb_vorbis.c. This manipulation causes out-of-bounds write. The identification of this vulnerability is CVE-2026-5317. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability has been found in Nothings stb up to 1.22 and classified as problematic. Affected by this vulnerability is the function start_decoder of the file stb_vorbis.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at gist.github.com. This vulnerability is known as CVE-2026-5317. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known.

It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-18114). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Nothings

Name

• stb

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #780561: nothings stb (stb_vorbis.c) ≤ 1.22 Out-of-bounds Write, Integer Overflow (by d0razi)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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