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Vulnerability · Published Apr 1, 2026 · Assigned by VulDB

CVE-2026-5315Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of-bounds

Medium 4.3

In plain English

A medium-severity out-of-bounds read in stb from Nothings. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.5%top 56.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Nothings stb up to 1.26. The affected element is the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. Executing a manipulation can lead to out-of-bounds read. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libstbno fix listedDEBIAN-CVE-2026-5315
Debian:13libstbno fix listedDEBIAN-CVE-2026-5315
Debian:14libstbno fix listedDEBIAN-CVE-2026-5315
Ubuntu:22.04:LTSlibstbno fix listedUBUNTU-CVE-2026-5315
Ubuntu:24.04:LTSlibstbno fix listedUBUNTU-CVE-2026-5315
Ubuntu:25.10libstbno fix listedUBUNTU-CVE-2026-5315
Ubuntu:26.04:LTSlibstbno fix listedUBUNTU-CVE-2026-5315
Ubuntu:26.10libstbno fix listedUBUNTU-CVE-2026-5315

Affected products (as reported)

VendorProductVersions
Nothings stb 1.01.11.21.31.41.51.61.7

Weakness: CWE-125, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

References