# CVE-2026-24476: Shaarli vulnerable to stored XSS via Suggested Tags

> Attackers can inject arbitrary HTML via malicious tags in Shaarli, leading to stored XSS attacks on the start page.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 26 Jan 2026
- **Updated:** 27 Jan 2026
- **Also known as:** DEBIAN-CVE-2026-24476, DSA-6128-1, GHSA-g3xq-mj52-f8pg, UBUNTU-CVE-2026-24476

## What is CVE-2026-24476?

CVE-2026-24476 is a medium-severity cross-site scripting vulnerability in Shaarli, published on 26 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Shaarli is a personal bookmarking service. Prior to version 0.16.0, crafting a malicious tag which starting with `"` prematurely ends the `<input>` tag on the start page and allows an attacker to add arbitrary html leading to a possible XSS attack. Version 0.16.0 fixes the issue.

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

## Which versions are affected by CVE-2026-24476?

It affects 1 product.


Products: Shaarli Project Shaarli.

## How do I fix CVE-2026-24476?

Upgrade to a fixed version.

## Is CVE-2026-24476 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-24476 exists.

## Other vulnerabilities in Shaarli

- [CVE-2023-49469](https://insights.sbomify.com/CVE-2023-49469/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2013-7351](https://insights.sbomify.com/CVE-2013-7351/): Cross-site scripting in Shaarli (medium 6.1)
- [CVE-2018-5249](https://insights.sbomify.com/CVE-2018-5249/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2017-15215](https://insights.sbomify.com/CVE-2017-15215/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-24476 and fix it if it is affected.

What it is: CVE-2026-24476 is a medium-severity cross-site scripting vulnerability in Shaarli, published on 26 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-24476 exists.

Affected product: Shaarli. 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-2026-24476/ (Markdown: https://insights.sbomify.com/CVE-2026-24476/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-24476
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-24476
- OSV: https://osv.dev/vulnerability/CVE-2026-24476

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-24476/
Summaries are generated and may contain mistakes; the official description above is the record.