PT-2026-28519 · Lychee · Lychee

Morimori-Dev · Published 2026-03-26 · Updated 2026-03-26 · CVE-2026-33738

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Lychee versions prior to 7.5.3

Description Lychee is a free, open-source photo-management tool. Before version 7.5.3, the photo description field was stored without HTML sanitization and rendered using {!! $item->summary !!} (Blade unescaped output) in the RSS, Atom, and JSON feed templates. The /feed API endpoint is publicly accessible without authentication, allowing any RSS reader to execute attacker-controlled JavaScript.

Recommendations Update to version 7.5.3 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-33738

GHSA-5574-7F3R-HM9J

Affected Products

Lychee

References · 8

• 🔥 https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5574-7f3r-hm9j · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33738.json · Exploit
• https://github.com/LycheeOrg/Lychee/commit/d2e2606a0223d5a384d5b806db1b31eb587adc5c · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-33738 · Security Note
• https://osv.dev/vulnerability/CVE-2026-33738 · Vendor Advisory
• https://github.com/LycheeOrg/Lychee/pull/4218 · Note
• https://github.com/LycheeOrg/Lychee/releases/tag/v7.5.3 · Note
• https://twitter.com/CVEnew/status/2037280538525118512 · Twitter Post