CVE-2026-77467
Lychee is a free, open-source photo-management tool
- Risk score
- 46/100
- CVSS
- 7.1 v4.0
- Exploit chance (30 days)
- 0.3%
- Published
- 15 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 Imagi…
- Affected
- See advisory
- Fix
- Upgrade the product to 7.7.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.1 high
References
- https://github.com/LycheeOrg/Lychee/commit/1e92846af4c2d259a225cf4517de17efba04f945
- https://github.com/LycheeOrg/Lychee/pull/4511
- https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.0
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-6736-fhxv-3p79
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-6736-fhxv-3p79
Original description
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.
Last activity 15 Oct 2026. Patch Forecast updates every hour.