GHSA-rgj7-g3m4-5g8c: sharp: Vulnerabilities in libheif: GHSA-g89c-p67h-r497 and GHSA-2jg2-4ch7-h545

A number of vulnerabilities, two rated as “Critical” severity using CVSSv3, have been discovered and fixed in the upstream libheif dependency. These can lead to possible remote code execution (RCE) on glibc-based Linux when run under certain conditions.

The attack vector for these claims to be “network” however sharp does not provide any networking features so this vulnerability is down-rated to a “High” severity using CVSSv4 but please note its Subsequent System Impact.

Those processing untrusted input with versions of sharp prior to 0.35.4 are affected.