CVE-2026-77468: DoS

Description

Lychee is a free, open-source photo-management tool. Prior to 7.7.0, GET /docs/api exposes the Scramble-generated OpenAPI documentation configured by config/scramble.php to unauthenticated callers after installation, with observed response size and latency suggesting that the schema is regenerated without an application-level cache. A remote attacker can repeatedly request the unthrottled route to consume server CPU and obtain a detailed map of the API surface and parameter schema. This issue is fixed in version 7.7.0.

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Weakness Type (CWE)

CWE-770 CWE-770

References

Other References

https://github.com/LycheeOrg/Lychee/commit/711f4290f53cd980cd5baa2434c734d364e9fe33 https://github.com/LycheeOrg/Lychee/pull/4510 https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.0 https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-xg8r-4pm3-2h4f

Frequently Asked Questions

What is CVE-2026-77468? +

Lychee is a free, open-source photo-management tool. Prior to 7.7.0, GET /docs/api exposes the Scramble-generated OpenAPI documentation configured by config/scramble.php to unauthenticated callers after installation, with observed response size and latency suggesting that the schema is regenerated without an application-level cache. A remote attacker can repeatedly request the unthrottled route to consume server CPU and obtain a detailed map of the API surface and parameter schema. This issue is fixed in version 7.7.0.

How do I check if I'm vulnerable to CVE-2026-77468? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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