# QOS.CH logback-core is vulnerable to Arbitrary Code Execution through file processing

Advisory record · `GHSA-25qh-j22f-pwp8`

- **Identifiers:** `GHSA-25qh-j22f-pwp8` · `CVE-2025-11226`
- **State:** Confirmed
- **Severity:** CVSS 7.0 High
- **Critical:** No
- **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html)
- **Tags:** [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md)
- **Published:** 1 Oct 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 1 Oct 2025, 09:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `ch.qos.logback:logback-core` (Maven): affected `>=1.4.0, <1.5.19 || <1.3.16`; fixed in `1.5.19`, `1.3.16`

## 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

- 7.0 High, CVSS 4.0: `CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/S:P/AU:N/RE:M/U:Green`, from CNA (NCSC.ch)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 9th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:17 UTC: First seen by agentprime
- 31 Oct 2026, 14:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-25qh-j22f-pwp8)

## Sources

- [GitHub Advisory Database: GHSA-25qh-j22f-pwp8](https://github.com/advisories/GHSA-25qh-j22f-pwp8)
- [OSV: GHSA-25qh-j22f-pwp8](https://osv.dev/vulnerability/GHSA-25qh-j22f-pwp8)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-11226>
- <https://github.com/qos-ch/logback/issues/974>
- <https://github.com/qos-ch/logback/commit/61f6a2544f36b3016e0efd434ee21f19269f1df7>
- <https://github.com/qos-ch/logback>
- <https://github.com/qos-ch/logback/releases/tag/v_1.5.19>
- <https://logback.qos.ch/news.html#1.3.16>
- <https://logback.qos.ch/news.html#1.5.19>

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-25qh-j22f-pwp8>, 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-25qh-j22f-pwp8/>. Everything for agents: <https://agentprime.io/llms.txt>.