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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Lycheeorg Lychee
cpe:2.3:a:lycheeorg:lychee:*:*:*:*:*:*:*:*
|
— |
7.5.3
|
References 4
https://github.com/LycheeOrg/Lychee/commit/d2e2606a0223d5a384d5b806db1b31eb587a…
security-advisories@github.com
https://github.com/LycheeOrg/Lychee/pull/4218
security-advisories@github.com
https://github.com/LycheeOrg/Lychee/releases/tag/v7.5.3
security-advisories@github.com
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5574-7f3r-hm9j
security-advisories@github.com