PT-2026-29202 · Nothings · Stb Image

D0Razi + 1 · CVE-2026-5185 · Published 2026-01-01 · Updated 2026-03-31

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions stb image versions prior to 2.31

Description A flaw exists in Nothings stb image, specifically within the Multi-frame GIF File Handler component. The issue resides in the stbi gif load next function of the stb image.h file and results in a heap-based buffer overflow. Exploitation requires local access. The exploit has been publicly released. The vendor was notified but did not respond.

Recommendations Update to a version prior to 2.31. As a temporary workaround, consider restricting the use of the Multi-frame GIF File Handler component until a patch is available.

Fix

Buffer Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-119

CWE-122

Related Identifiers

CVE-2026-5185

Affected Products

Stb Image

References · 10

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-5185 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-5185 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5185 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-5185 · Security Note
• https://ubuntu.com/security/CVE-2026-5185 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-5185 · Vendor Advisory
• https://vuldb.com/submit/780390 · Note
• https://vuldb.com/vuln/354253/cti · Note
• https://vuldb.com/vuln/354253 · Note
• https://twitter.com/CVEnew/status/2038916019771843063 · Twitter Post