Allocation of Resources Without Limits or Throttling Affecting pypdf package, versions [,6.7.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Feb 2026
- disclosed26 Feb 2026
- creditbekkaze
Introduced: 26 Feb 2026
CVE-2026-27888 (opens in a new tab)How to fix?
Upgrade pypdf to version 6.7.3 or higher.
Overview
pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the xfa property of the reader or the writer when the corresponding streams compressed with /FlateDecode. An attacker can cause excessive memory consumption by supplying a specially crafted PDF file.