CVE-2026-3707 MEDIUM

CVE-2026-3707: MrNanko webp4j gif_decoder.c DecodeGifFromMemory integer overflow

Vendor Mrnanko
Product webp4j
Weakness CWE-190
Published March 8, 2026
Last update March 10, 2026

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was identified in MrNanko webp4j up to 1.3.x. The affected element is the function DecodeGifFromMemory of the file src/main/c/gif_decoder.c. Such manipulation of the argument canvas_height leads to integer overflow. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is 89771b201c66d15d29e4cc016d8aae82b6a5fbe1. It is advisable to implement a patch to correct this issue.

Key dates

02Disclosure timeline

March 8, 2026 CVE published
March 10, 2026 Record updated