CVE-2026-90682: Matthias-Wandel jhead WebP EXIF gpsinfo.c ProcessGpsInfo heap-based overflow
A security vulnerability has been detected in Matthias-Wandel jhead up to 3.3. This impacts the function ProcessGpsInfo of the file gpsinfo.c of the component WebP EXIF Handler. Such manipulation of the argument TAGGPSLAT/TAGGPSLONG leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Affected Software
Event History
Frequently Asked Questions
Which installations are in scope for triage?
Matthias-Wandel jhead versions up to 3.3 are identified as affected when handling WebP EXIF GPS metadata. The issue is in the WebP EXIF Handler's GPS information processing.
What access does an attacker need?
Exploitation must be approached locally and requires low privileges. The attacker manipulates GPS latitude or longitude tag values (TAG_GPS_LAT or TAG_GPS_LONG) to trigger the heap-based overflow.
Is exploit information available publicly?
Yes. The exploit has been publicly disclosed and may be used.
Is a vendor fix identified?
No remediation or fixed version is provided in the available information. The project was reportedly notified through an issue report but had not responded at the time of publication.