High 7.1Published Aug 7, 2026

CVE-2026-18497The nothings stb TrueType library contains a heap buffer overflow vulnerability

Updated under an hour ago (2026-10-19 07:30 UTC)

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It affects Sean Barrett (nothings) nothings stb. Add what you run to find out whether that includes you.

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Every CVE for Sean Barrett (nothings) nothings stb

Exploited in the last 30 days

A heap-buffer-overflow vulnerability exists in the nothings stb TrueType library, up to version 1.26, that is used for parsing TrueType font files. The vulnerability exists in the stbtt__GetGlyphShapeTT() function within the nothings stb_truetype.h library when parsing malformed TTF (TrueType Font) files. The vulnerability resides in the glyph data parsing path. An attacker can craft a malformed TTF file with an inflated endPtsOfContours value and truncate the remaining glyph data. When an application utilizing stb_truetype.h (such as various game engines or graphics software) attempts to load, bake, or render this malformed font via stbtt_GetGlyphShape(), the parser will attempt to read past the end of the glyph data buffer, triggering the out-of-bounds read.

CVSS: 7.1 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness (CWE): CWE-122
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: certcc
NVD analysis: Deferred
Record last updated: Aug 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Sean Barrett (nothings) nothings stb sean_barrett_nothings:nothings_stb (from the name)	1.26	CNA record

References

https://cwe.mitre.org/data/definitions/122.html
https://github.com/nothings/stb
https://github.com/nothings/stb/issues/1905
https://kb.cert.org/vuls/id/987105
https://www.kb.cert.org/vuls/id/987105

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.