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CVE-2026-27888
Published: Feb 26, 2026
Modified: Feb 26, 2026
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
py-pdf | pypdf | affected < 6.7.3 |
Weaknesses (CWE)
References
https://github.com/py-pdf/pypdf/security/advisories/GHSA-x7hp-r3qg-r3cj
x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3658
x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.7.3
x_refsource_MISC
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