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CVE-2026-27628

pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams PUBLISHED

Description (CNA)

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.

Affected (CNA)

Vendor / productVersions
py-pdf / pypdfaffected < 6.7.2

CWE

CWE-835

References

ADP enrichment

CISA-ADP

No English description supplied.