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CVE-2026-27025

pypdf has possible long runtimes/large memory usage for large /ToUnicode streams PUBLISHED

Description (CNA)

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.

Affected (CNA)

Vendor / productVersions
py-pdf / pypdfaffected < 6.7.1

CWE

CWE-834

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.