# Apache JSPWiki Cross-Site Scripting (XSS) Vulnerability via Header Link Rendering

Advisory record · `GHSA-rrff-chj9-w4c7`

- **Identifiers:** `GHSA-rrff-chj9-w4c7` · `CVE-2025-24853`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **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:** 31 Jul 2025
- **Updated:** 5 Nov 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 31 Jul 2025, 09:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.apache.jspwiki:jspwiki-main` (Maven): affected `<2.12.3`; fixed in `2.12.3`
- `org.apache.jspwiki:jspwiki-markdown` (Maven): affected `<2.12.3`; fixed in `2.12.3`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Apache JSPWiki (jspwiki-main and jspwiki-markdown) versions before 2.12.3 are vulnerable to cross-site scripting through header link rendering in the wiki markup and markdown parsers. An attacker can send a specially crafted request when a header link is created, which could run JavaScript in a victim's browser and expose some sensitive information. Users should upgrade to version 2.12.3 or later.

Written 7 Nov 2026.

## 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

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`, from ADP (CISA-ADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0060, the 49th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:09 UTC: First seen by agentprime
- 31 Oct 2026, 15:09 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-rrff-chj9-w4c7)

## Sources

- [GitHub Advisory Database: GHSA-rrff-chj9-w4c7](https://github.com/advisories/GHSA-rrff-chj9-w4c7)
- [OSV: GHSA-rrff-chj9-w4c7](https://osv.dev/vulnerability/GHSA-rrff-chj9-w4c7)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-24853>
- <https://github.com/apache/jspwiki/pull/376>
- <https://github.com/apache/jspwiki/commit/402f9a18b57dd910afba0139e6d3112d54ad650a>
- <https://github.com/apache/jspwiki/commit/f4089cb6d53223c2c291196ba687753a8b0422cf>
- <https://github.com/apache/jspwiki>
- <https://jspwiki-wiki.apache.org/Wiki.jsp?page=CVE-2025-24853>
- <http://www.openwall.com/lists/oss-security/2025/07/30/2>

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-rrff-chj9-w4c7>, 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-rrff-chj9-w4c7/>. Everything for agents: <https://agentprime.io/llms.txt>.