CVE-2026-59938Medium· 5.3▾ SunlitA flaw was found in pypdf, a free and open-source pure-python PDF library. An attacker can exploit this vulnerability by crafting a malicious PDF file with image size values that are significantly larger than the actual embedded image data…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 2.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.3%
0.3% → 0.5%
Last analysed / modified upstream
— → 5.3
A flaw was found in pypdf, a free and open-source pure-python PDF library. An attacker can exploit this vulnerability by crafting a malicious PDF file with image size values that are significantly larger than the actual embedded image data, causing pypdf to allocate large amounts of memory when processing the file.
pypdf: pypdf: Possible large memory usage for wrong image dimensions — rated Moderate by Red Hat. Released 2026-07-08, updated 2026-10-15.
Affected:
No fix planned:
Fix deferred
Workarounds / mitigations:
Affected packages:
pypdf < 6.14.0Patched in:
pypdf 6.14.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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