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CVE-2026-102996

pypdf: Possible large memory usage when parsing font data PUBLISHED

Description (CNA)

pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.

Affected (CNA)

Vendor / productVersions
py-pdf / pypdfaffected < 6.18.1

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.