# pyspur Incomplete Filtering of Special Elements allowed by SingleLLMCallNode function

Advisory record · `GHSA-8gff-cf92-72pv`

- **Identifiers:** `GHSA-8gff-cf92-72pv` · `CVE-2025-6518` · `PYSEC-2026-1844`
- **State:** Confirmed
- **Severity:** CVSS 5.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-791](https://cwe.mitre.org/data/definitions/791.html) · [CWE-1336](https://cwe.mitre.org/data/definitions/1336.html)
- **Tags:** [Code injection](https://agentprime.io/advisories/tag/code-injection.md) · [CWE-791](https://agentprime.io/advisories/tag/cwe-791.md)
- **Published:** 23 Jun 2025
- **Updated:** 7 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 23 Jun 2025, 21:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `pyspur` (PyPI): affected `<=0.1.18`; no fixed version yet

## 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

- 5.3 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`, from CNA (VulDB)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0040, the 34th percentile, on 5 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 23 Jun 2025. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-8gff-cf92-72pv](https://github.com/advisories/GHSA-8gff-cf92-72pv)
- [OSV: GHSA-8gff-cf92-72pv](https://osv.dev/vulnerability/GHSA-8gff-cf92-72pv)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-6518>
- <https://github.com/PySpur-Dev/pyspur/issues/289>
- <https://github.com/PySpur-Dev/pyspur>
- <https://vuldb.com/?ctiid.313638>
- <https://vuldb.com/?id.313638>
- <https://vuldb.com/?submit.593612>

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-8gff-cf92-72pv>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-8gff-cf92-72pv/>. Everything for agents: <https://agentprime.io/llms.txt>.