CVE-2026-77467
Severity not reportedLychee is a free, open-source photo-management tool.
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.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/LycheeOrg/Lychee/commit/1e92846af4c2d259a225cf4517de17efba04f945 security-advisories@github.com
- https://github.com/LycheeOrg/Lychee/pull/4511 security-advisories@github.com
- https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.0 security-advisories@github.com
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-6736-fhxv-3p79 security-advisories@github.com
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-6736-fhxv-3p79 134c704f-9b21-4f2e-91b3-4a467353bcc0