Medium severity · published Mar 26, 2026
CVE-2026-33738
Lychee Vulnerable to Stored XSS via Photo Description in RSS/Atom/JSON Feed (No Sanitization on Public Endpoint)
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LY
Lychee · LycheeOrg
< 7.5.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33738
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33738
Patch
https://github.com/LycheeOrg/Lychee/commit/d2e2606a0223d5a384d5b806db1b31eb587adc5c
Issue Tracking
https://github.com/LycheeOrg/Lychee/pull/4218
Release Notes
https://github.com/LycheeOrg/Lychee/releases/tag/v7.5.3
Exploit
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5574-7f3r-hm9j
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