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CVE-2026-57568

Lychee: Stored XSS via Markdown javascript: Links in Photo and Album Descriptions (Gallery View)

MEDIUM
5.7
CVSS Score
Published: October 15, 2026 at 04:22 PM UTC
Updated: October 16, 2026 at 06:17 PM UTC
1 product affected across 1 vendorLychee

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Lychee is a free, open-source photo-management tool. Prior to 7.6.0, Lychee permits an authenticated user with album-edit permissions to store a javascript URI in an album or photo Markdown description because config/markdown.php enables allow_unsafe_links. app/Http/Resources/Models/Utils/PreformattedPhotoData.php and app/Http/Resources/Models/Utils/PreFormattedAlbumData.php convert the description to HTML, and the gallery components PhotoDetails.vue, Overlay.vue, PhotoThumb.vue, AlbumHero.vue, and AlbumCard.vue render that HTML with v-html. A visitor, including an unauthenticated visitor to a public album, who clicks the rendered link executes attacker-controlled JavaScript in the Lychee origin, which can expose session data or enable authenticated requests in the victim's context. This gallery-view flaw is distinct from CVE-2026-33738, which addressed feed rendering. This issue is fixed in version 7.6.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Lychee· Lycheeorg
90%
v < 7.6.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_CONFIRM
Source: cverecord
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-pgfr-x389-5p2h
x_refsource_MISC
Source: cverecord
https://github.com/LycheeOrg/Lychee/pull/4377
x_refsource_MISC
Source: cverecord
https://github.com/LycheeOrg/Lychee/commit/f0604ead5889bfed404d6f5e1a9205f945172c7e
x_refsource_MISC
Source: cverecord
https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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