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Pillow: GIF seek keeps rejected size after DecompressionBombError, allowing DoS

Type: advisorySource: Official CVE List1 source record

Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow can retain a rejected GIF frame size after a decompression-bomb exception. In GifImageFile._seek, a crafted GIF can leave rejected dimensions stored after Image.DecompressionBombError; if an application catches that exception and continues processing the same image object, later seek or load operations allocate according to those dimensions and can exhaust memory, denying service. This issue is fixed in version 13.0.0.

Announced Source revision 1
Original source ↗

CVE-2026-112400

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-112400

Pillow

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "python-pillow",
    "product": "Pillow",
    "versions": [
      {
        "status": "affected",
        "version": ">= 9.2.0, < 13.0.0"
      }
    ]
  }
]
Related CVEs
CVE-2026-112400

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#42232 · Revision 1
Added to Heist Feed
Publisher date
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