CVE-2026-48156Low· 3.3▾ Sunlitpypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 18.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.1%
low → medium
medium → low
low → medium
medium → low
low → medium
medium → low
low → medium
medium → low
low → medium
medium → low
low → medium
medium → low
0.1% → 0.2%
Last analysed / modified upstream
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.
pypdf < 6.12.0Upgrade past the affected range:
pypdf 6.12.0Affected packages:
pypdf < 6.12.0Patched in:
pypdf 6.12.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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