A flaw was found in FreeType, specifically within its CID font loader. A remote attacker could exploit this vulnerability by tricking a user into opening content that embeds or references a specially crafted CID-keyed font. This crafted font can cause repeated allocations and decryptions of subroutine data across multiple font dictionaries, leading to excessive memory and CPU consumption. This can result in a denial of service (DoS) for the application or service processing the font, potentially causing it to hang or terminate.
https://gitlab.freedesktop.org/freetype/freetype/-/commit/f3ca71c9900fe860849b3163a6e2c1e765b291d9
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91327
https://bugzilla.redhat.com/show_bug.cgi?id=2462295