MrNanko webp4j up to 1.3.x src/main/c/gif_decoder.c DecodeGifFromMemory canvas_height integer overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.0$0-$5k0.25

Summaryinfo

A vulnerability has been found in MrNanko webp4j up to 1.3.x and classified as critical. The impacted element is the function DecodeGifFromMemory of the file src/main/c/gif_decoder.c. Performing a manipulation of the argument canvas_height results in integer overflow. This vulnerability was named CVE-2026-3707. The attack needs to be approached locally. In addition, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in MrNanko webp4j up to 1.3.x. This affects the function DecodeGifFromMemory of the file src/main/c/gif_decoder.c. The manipulation of the argument canvas_height with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-3707. The exploitability is told to be easy. An attack has to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Applying the patch 89771b201c66d15d29e4cc016d8aae82b6a5fbe1 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-10214). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 89771b201c66d15d29e4cc016d8aae82b6a5fbe1

Timelineinfo

03/07/2026 Advisory disclosed
03/07/2026 +0 days VulDB entry created
03/09/2026 +2 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-3707 (🔒)
GCVE (CVE): GCVE-0-2026-3707
GCVE (VulDB): GCVE-100-349653
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/07/2026 10:14
Updated: 03/09/2026 01:03
Changes: 03/07/2026 10:14 (60), 03/08/2026 17:52 (30), 03/09/2026 01:03 (1)
Complete: 🔍
Submitter: sp1d3r
Cache ID: 216:D31:103

Submitinfo

Accepted

  • Submit #765972: MrNanko(dev.matrixlab:webp4j) webp4j <= 1.4.0 Integer Overflow to Buffer Overflow (by sp1d3r)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!