Heap-Based Buffer Overflow in Matthias-Wandel jhead WebP EXIF Handler
CVE-2026-90682

4.8MEDIUM

Key Information:

Vendor

Matthias-wandel

Status
Jhead
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90682?

A vulnerability has been discovered in the jhead component by Matthias-Wandel, specifically within the ProcessGpsInfo function located in gpsinfo.c. This flaw allows for the heap-based buffer overflow by manipulating GPS latitude and longitude tags. Such exploitation requires local access, but the nature of the security issue raises concerns for anyone utilizing affected versions. The problem has been reported to the responsible project, but no response has been documented regarding remediation, leaving potential users at risk if updates are not applied.

Affected Version(s)

jhead 3.0

jhead 3.1

jhead 3.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90682 - Proof of Concept

References

https://vuldb.com/vuln/403215
vdb-entrytechnical-description
https://vuldb.com/vuln/403215/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90682
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

fczhang (VulDB User)
VulDB CNA Team
.