CVE-2026-120752
highPyMuPDF 1.25.3 before 2.0 contains a stack-based buffer overflow vulnerability in JM_set_annot_callout_line() that copies a caller-supplied number of callout p…
PyMuPDF 1.25.3 before 2.0 contains a stack-based buffer overflow vulnerability in JM_set_annot_callout_line() that copies a caller-supplied number of callout points into a fixed three-element stack array. Attackers who control the callout argument passed to Page.add_freetext_annot() can supply four or more points to overwrite the stack frame, crashing the process or executing code.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/pymupdf/PyMuPDF disclosure@vulncheck.com
- https://github.com/pymupdf/PyMuPDF/blob/1.28.2/src/extra.i#L787-L797 disclosure@vulncheck.com
- https://github.com/pymupdf/PyMuPDF/commit/d4298ead84ceeae1c9065c81cd9a275a1b092f5e disclosure@vulncheck.com
- https://github.com/pymupdf/PyMuPDF/issues/5112 disclosure@vulncheck.com
- https://github.com/pymupdf/PyMuPDF/issues/5173 disclosure@vulncheck.com
- https://github.com/pymupdf/PyMuPDF/releases/tag/2.0 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/pymupdf-1.25.3-before-2.0-stack-buffer-overflow-via-a... disclosure@vulncheck.com