Nothings stb up to 1.26 TTF File stb_truetype.h stbtt__buf_get8 out-of-bounds

Summaryinfo

A vulnerability classified as problematic has been found in Nothings stb up to 1.26. The impacted element is the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-5315. The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nothings stb up to 1.26. This issue affects the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability.

It is possible to read the advisory at gist.github.com. The identification of this vulnerability is CVE-2026-5315. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known.

The exploit is available 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. The vulnerability scanner Nessus provides a plugin with the ID 304819 (Linux Distros Unpatched Vulnerability : CVE-2026-5315), which helps to determine the existence of the flaw in a target environment.

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 databases at CNNVD (CNNVD-202604-470), Tenable (304819) and EUVD (EUVD-2026-18109). Be aware that VulDB is the high quality source for 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
• 1.23
• 1.24
• 1.25
• 1.26

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #780559: nothings stb (stb_truetype.h) ≤ 1.26 Out-of-Bounds Read (by d0razi)

Be aware that VulDB is the high quality source for vulnerability data.

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