Vulnerability Description
SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Related Weaknesses (CWE)
References
- https://github.com/chenjiefeng2001/sumatrapdf_folked/commit/b22a8c71ddc9de80ece5
- https://github.com/haimag/sumatrapdf/commit/8b999ff1bf0a8df244e75440682a3fd9a038
- https://github.com/sumatrapdfreader/sumatrapdf/issues/5952
- https://github.com/sumatrapdfreader/sumatrapdf/issues/5952
FAQ
What is CVE-2026-88361?
CVE-2026-88361 is a vulnerability with a CVSS score of 7.5 (HIGH). SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
How severe is CVE-2026-88361?
CVE-2026-88361 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-88361?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.