CVE-2026-77467
Lychee: A single 383-byte PDF causes ~184 seconds of CPU consumption in the real processing path
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.
| CWE | CWE-400 CWE-770 |
| Vendor | lycheeorg |
| Product | lychee |
| Published | Oct 15, 2026 |
Get instant alerts for lycheeorg lychee
Be the first to know when new unknown vulnerabilities affecting lycheeorg lychee are published — delivered to Slack, Telegram or Discord.