CVE-2026-33738

EUVD-2026-16417
Lychee is a free, open-source photo-management tool. Prior to version 7.5.3, the photo `description` field is stored without HTML sanitization and rendered using `{!! $item->summary !!}` (Blade unescaped output) in the RSS, Atom, and JSON feed templates. The `/feed` endpoint is publicly accessible without authentication, allowing any RSS reader to execute attacker-controlled JavaScript. Version 7.5.3 fixes the issue.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.8 MEDIUM
NETWORK
LOW
LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
lycheeorglychee
𝑥
< 7.5.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/LycheeOrg/Lychee/commit/d2e2606a0223d5a384d5b806db1b31eb587adc5c
https://github.com/LycheeOrg/Lychee/pull/4218
https://github.com/LycheeOrg/Lychee/releases/tag/v7.5.3
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5574-7f3r-hm9j
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5574-7f3r-hm9j