CVE-2026-84311Low· 3.3▾ Sunlitpypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused fo…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 18.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 2.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.1%
0.1% → 0.2%
— → 5.5
Last analysed / modified upstream
5.5 → 3.3
medium → low
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused form XObjects in which each form invokes a child multiple times, creating exponentially many traversal paths and causing long runtimes and large memory consumption. This issue is fixed in version 6.16.1.
pypdf < 6.16.1Upgrade past the affected range:
pypdf 6.16.1Affected packages:
pypdf < 6.16.1Patched in:
pypdf 6.16.1Source: https://github.com/advisories/GHSA-763m-79hh-57f2
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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