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NVD HIGH: CVE-2026-102996 — pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a craf...

·Source: NIST NVD

Updated:

Executive Summary

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 fixe

Analysis

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. CVSS Score: 7.5. Published: 2026-09-30T21:17:06.863.

Indicators of Compromise (1)

CVE (1)
CVE-2026-102996
Source Attribution

Originally published by NIST NVD on Sep 30, 2026. Verified by: NIST.

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