# CVE-2026-24903: OrcaStatLLM Researcher Stored Cross-Site Scripting (XSS) via Log Message Injection in Session Page

> Attackers can inject arbitrary JavaScript into the session page log messages, potentially compromising user sessions in the OrcaStatLLM Researcher application.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Feb 2026
- **Updated:** 6 Feb 2026

## What is CVE-2026-24903?

CVE-2026-24903 is a medium-severity cross-site scripting vulnerability in AlgoNetLab OrcaStatLLM-Researcher, published on 6 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

OrcaStatLLM Researcher is an LLM Based Research Paper Generator. A Stored Cross-Site Scripting (XSS) vulnerability was discovered in the  Log Message in the Session Page in OrcaStatLLM-Researcher that allows attackers to inject and execute arbitrary JavaScript code in victims' browsers through malicious research topic inputs.

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

## Which versions are affected by CVE-2026-24903?

It affects 1 product.


Products: Algonet Orcastatllm Researcher.

## How do I fix CVE-2026-24903?

No fix has been published for CVE-2026-24903 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-24903 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-24903 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-24903 and fix it if it is affected.

What it is: CVE-2026-24903 is a medium-severity cross-site scripting vulnerability in AlgoNetLab OrcaStatLLM-Researcher, published on 6 Feb 2026. An attacker can exploit it over the internet without logging in, 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-2026-24903 exists.

Affected product: AlgoNetLab OrcaStatLLM-Researcher. 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-2026-24903/ (Markdown: https://insights.sbomify.com/CVE-2026-24903/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-24903
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-24903
- OSV: https://osv.dev/vulnerability/CVE-2026-24903

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-24903/
Summaries are generated and may contain mistakes; the official description above is the record.