CVE-2026-59200High· 7.5▾ TwilightA flaw was found in Pillow, a Python imaging library. A remote attacker could exploit a vulnerability in the PdfParser.PdfStream.decode() function when processing a crafted FlateDecode PDF stream. By providing a specially designed PDF file…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · 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 CSAF
0.4%
0.4% → 0.7%
Last analysed / modified upstream
A flaw was found in Pillow, a Python imaging library. A remote attacker could exploit a vulnerability in the PdfParser.PdfStream.decode() function when processing a crafted FlateDecode PDF stream. By providing a specially designed PDF file, the attacker could cause the application to exhaust available memory, leading to a denial of service (DoS).
Pillow: Pillow: Denial of service via crafted PDF stream — rated Important by Red Hat. Released 2026-07-14, updated 2026-10-15.
Affected:
Fixed:
No fix planned:
Not affected:
For more information visit https://access.redhat.com/errata/RHSA-2026:59518 https://access.redhat.com/errata/RHSA-2026:59518 For more information visit https://access.redhat.com/errata/RHSA-2026:70996 https://access.redhat.com/errata/RHSA-2026:70996 For more information visit https://access.redhat.com/errata/RHSA-2026:69468 https://access.redhat.com/errata/RHSA-2026:69468
Workarounds / mitigations:
Affected packages:
pillow >= 5.1.0, < 12.3.0Patched in:
pillow 12.3.0Connected by shared product, vendor, weakness, or advisory.
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