# CVE-2026-57568: Lychee: Stored XSS via Markdown javascript: Links in Photo and Album Descriptions (Gallery View)

> Authenticated users can inject JavaScript via Markdown links in photo descriptions, allowing attackers to execute code in visitors' browsers.

- **Severity:** Medium 5.7 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-pgfr-x389-5p2h

## What is CVE-2026-57568?

CVE-2026-57568 is a medium-severity cross-site scripting vulnerability in LycheeOrg Lychee, published on 15 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-57568?


## How do I fix CVE-2026-57568?

No fix has been published for CVE-2026-57568 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-57568 being exploited?

There is no known exploitation of CVE-2026-57568 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57568 and fix it if it is affected.

What it is: CVE-2026-57568 is a medium-severity cross-site scripting vulnerability in LycheeOrg Lychee, published on 15 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-57568 in the wild and no public exploit code.

Affected product: LycheeOrg Lychee. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-57568/ (Markdown: https://insights.sbomify.com/CVE-2026-57568/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57568
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57568
- OSV: https://osv.dev/vulnerability/CVE-2026-57568

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57568/
Summaries are generated and may contain mistakes; the official description above is the record.