Out-of-bounds Read in GNOME Libgxps
CVE-2026-111132
GNOME libgxps through 0.3.2 contains a heap out-of-bounds read in path_geometry_start_element() that allows attackers to read past allocations via crafted PolyBezierSegment or PolyQuadraticBezierSegment Points attributes. Attackers can supply a point count not divisible by three or two in a crafted XPS document to crash consumers like Evince and render adjacent heap memory into output.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/libgxps-poly-segment-points-arity-oob-read (technical-description)
- gitlab.gnome.org/GNOME/libgxps/-/blob/f5027ed09c767e8a02e652fbc77dcea79e19e10d/… (technical-description)
- gitlab.gnome.org/GNOME/libgxps/-/blob/f5027ed09c767e8a02e652fbc77dcea79e19e10d/… (technical-description)
- gitlab.gnome.org/GNOME/libgxps (product)
- www.vulncheck.com/advisories/gnome-libgxps-through-0.3.2-heap-out-of-bounds-rea… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111132?
- CVE-2026-111132 is a medium-severity vulnerability in GNOME Libgxps, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-10-15.
- How severe is CVE-2026-111132?
- Medium severity. CVSS v3 base score is 6.1 out of 10.