CVE-2026-71852
pypdf: Possible long runtimes/large memory usage for large CID font width ranges
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.
No summary for this CVE yet.
Weaknesses
Affected Products
py-pdf
package-ecosystemaka pypdf2, pypdf
pypdfOn-prem
OSS Libraries / pypiExploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42
github.com
https://github.com/py-pdf/pypdf/pull/3946
github.com
https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7
github.com
and 1 more references View all →
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