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CVE-2026-27888

🔴 HIGH

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the `xf...

Published
Feb 26, 2026
Last Modified
Feb 27, 2026
Views
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Description

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pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the `xfa` property of a reader or writer and the corresponding stream being compressed using `/FlateDecode`. This has been fixed in pypdf 6.7.3. As a workaround, apply the patch manually.

Affected Products (1)

pypdf_project - pypdf

Version: *

CVSS Scores

CVSS 3.1 7.5
7.5
HIGH
CVSS 2.0 7.5

References

github.com github.com github.com github.com

Additional Information

Source
security-advisories@github.com
State
Analyzed

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