CVE-2026-77467
CVE-2026-77467 · Lychee: A single 383-byte PDF causes ~184 seconds of CPU consumption in the real processing path
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Lychee is a free, open-source photo-management tool. Prior to 7.7.0, Lychee enables ImageMagick PDF support with Ghostscript but does not apply an effective pre-render limit to PDF page dimensions in ImagickHandler::loadPdf(). An authenticated user who can upload a small PDF with an oversized /MediaBox can cause Imagick::readImage() to consume substantial CPU before failing to produce an image. When QUEUE_CONNECTION selects synchronous processing the request can occupy a web worker, while the official asynchronous Docker configuration can clog the shared image-processing queue and delay other work. The advisory did not identify a Ghostscript sandbox escape. This issue is fixed in version 7.7.0.
CVSS 7.1 · Hoch · EPSS 0,3%
- Veröffentlicht
- Aktualisiert
Betroffene Produkte und Versionen
lychee
- Softwareversionen
- < 7.7.0: Betroffen
Keine Korrektur veröffentlicht
Originalquellen
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-6736-fhxv-3p79
- https://github.com/LycheeOrg/Lychee/pull/4511
- https://github.com/LycheeOrg/Lychee/commit/1e92846af4c2d259a225cf4517de17efba04f945
- https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-77467