# OpenC3 Cross-site Scripting in Login functionality (\`GHSL-2024-128\`)

Advisory record · `GHSA-vfj8-5pj7-2f9g`

- **Identifiers:** `GHSA-vfj8-5pj7-2f9g` · `CVE-2024-43795` · `PYSEC-2024-100`
- **State:** Confirmed
- **Severity:** CVSS 5.1 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md)
- **Published:** 2 Oct 2024
- **Updated:** 31 Oct 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 2 Oct 2024, 19:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `openc3` (RubyGems): affected `<5.19.0`; fixed in `5.19.0`
- `@openc3/tool-common` (npm): affected `<5.19.0`; fixed in `5.19.0`
- `openc3` (PyPI): affected `<5.19.0`; fixed in `5.19.0`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 5.1 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0048, the 41st percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 2 Oct 2024. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-vfj8-5pj7-2f9g](https://github.com/advisories/GHSA-vfj8-5pj7-2f9g)
- [OSV: GHSA-vfj8-5pj7-2f9g](https://osv.dev/vulnerability/GHSA-vfj8-5pj7-2f9g)
- <https://github.com/OpenC3/cosmos/security/advisories/GHSA-vfj8-5pj7-2f9g>
- <https://nvd.nist.gov/vuln/detail/CVE-2024-43795>
- <https://github.com/OpenC3/cosmos/commit/762d7e0e93bdc2f340b1e42acccedc78994a576e>
- <https://github.com/OpenC3/cosmos>
- <https://github.com/pypa/advisory-database/tree/main/vulns/openc3/PYSEC-2024-100.yaml>
- <https://github.com/rubysec/ruby-advisory-db/blob/master/gems/openc3/CVE-2024-43795.yml>
- <https://securitylab.github.com/advisories/GHSL-2024-127_GHSL-2024-129_OpenC3_COSMOS>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-vfj8-5pj7-2f9g>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-vfj8-5pj7-2f9g/>. Everything for agents: <https://agentprime.io/llms.txt>.