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CVE-2026-5186

Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif_main double free

MEDIUM
5.3
CVSS Score
Published: March 31, 2026 at 07:30 AM UTC
Updated: June 17, 2026 at 10:58 AM UTC
1 product affected across 1 vendorStb

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

A weakness has been identified in Nothings stb up to 2.30. This impacts the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. This manipulation causes double free. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/354254
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/354254/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/780395

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-415CWE-119

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