# CVE-2026-53555: Stored XSS via SVG Upload

> An authenticated user can upload a malicious SVG file that executes JavaScript in other users' browsers, leading to session hijacking or data theft.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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:** 17 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-v23m-5pvq-xcgx

## What is CVE-2026-53555?

CVE-2026-53555 is a medium-severity cross-site scripting vulnerability in dataease SQLBot, published on 17 Sep 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

SQLBot is an intelligent Text-to-SQL system based on large language models and RAG. Prior to 1.9.0, an authenticated uploader can submit an image/svg+xml assistant UI logo through PATCH /api/v1/system/assistant/ui, and SQLBot stores the SVG without sanitizing or validating embedded active content. SQLBot later serves the file inline from the same application origin through GET /api/v1/system/assistant/picture/{filename}. When another user loads that generated resource, JavaScript embedded in the SVG executes in the SQLBot web application context, resulting in stored cross-site scripting with access to data and actions available to the victim's session. This issue is fixed in version 1.9.0.

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

## Which versions are affected by CVE-2026-53555?


## How do I fix CVE-2026-53555?

No fix has been published for CVE-2026-53555 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-53555 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53555 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-53555 and fix it if it is affected.

What it is: CVE-2026-53555 is a medium-severity cross-site scripting vulnerability in dataease SQLBot, published on 17 Sep 2026. Any signed-in user can exploit it over the 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-2026-53555 exists.

Affected product: dataease SQLBot. 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-2026-53555/ (Markdown: https://insights.sbomify.com/CVE-2026-53555/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-53555
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-53555
- OSV: https://osv.dev/vulnerability/CVE-2026-53555

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-53555/
Summaries are generated and may contain mistakes; the official description above is the record.