CVE-2026-5186 | Nothings stb up to 2.30 Multi-frame GIF File stb_image.h stbi__load_gif_main double free

VDB-354254 · CVE-2026-5186 · GCVE-100-354254 NOTHINGS STB UP TO 2.30 MULTI-FRAME GIF FILE STB_IMAGE.H STBI__LOAD_GIF_MAIN DOUBLE FREE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.8 $0-$5k 2.70+ Summaryinfo A vulnerability described as critical has been identified in Nothings stb up to 2.30. Affected is the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. Such manipulation leads to double free. This vulnerability is traded as CVE-2026-5186. An attack has to be approached locally. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in Nothings stb up to 2.30 and classified as critical. Affected by this issue is the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. This vulnerability is handled as CVE-2026-5186. The exploitation is known to be easy. Local access is required to approach this attack. Technical details as well as a public exploit are known. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Nothings Name stb Version 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 2.23 2.24 2.25 2.26 2.27 2.28 2.29 2.30 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 4.8 VulDB Base Score: 5.3 VulDB Temp Score: 4.8 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Double free CWE: CWE-415 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Access: Public Status: Proof-of-Concept Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/30/2026 Advisory disclosed 03/30/2026 +0 days VulDB entry created 03/30/2026 +0 days VulDB entry last update Sourcesinfo Status: Not defined CVE: CVE-2026-5186 (🔒) GCVE (CVE): GCVE-0-2026-5186 GCVE (VulDB): GCVE-100-354254 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/30/2026 21:23 Changes: 03/30/2026 21:23 (55) Complete: 🔍 Submitter: d0razi Cache ID: 99:7E4:101 Submitinfo Accepted Submit #780395: nothings stb stb_image.h <= 2.30 Double Free (by d0razi) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸