Vulnerability · Published Mar 23, 2026 · Assigned by mitre
CVE-2025-52204
Medium 6.1
In plain English
A medium-severity cross-site scripting in the znuny package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 84.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official description
A Cross-Site Scripting (XSS) vulnerability exists in Znuny::ITSM 6.5.x in the customer.pl endpoint via the OTRSCustomerInterface parameter
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | znuny | no fix listed | DEBIAN-CVE-2025-52204 |
| Debian:13 | znuny | no fix listed | DEBIAN-CVE-2025-52204 |
| Debian:14 | znuny | 6.5.19-1 | DEBIAN-CVE-2025-52204 |
| Ubuntu:22.04:LTS | otrs2 | no fix listed | UBUNTU-CVE-2025-52204 |
| Ubuntu:24.04:LTS | znuny | no fix listed | UBUNTU-CVE-2025-52204 |
| Ubuntu:25.10 | znuny | no fix listed | UBUNTU-CVE-2025-52204 |
| Ubuntu:26.04:LTS | znuny | no fix listed | UBUNTU-CVE-2025-52204 |
| Ubuntu:26.10 | znuny | no fix listed | UBUNTU-CVE-2025-52204 |
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N