5.3

CVE-2025-9158: best practical request tracker Cross-site Scripting

CVSS: 5.3v4.0MediumDeferred
AliasesUBUNTU-CVE-2025-9158DEBIAN-CVE-2025-9158
Published 24-10-2025Last modified 24-10-2025
Open JSON

Vulnerability summary

CVE-2025-9158 is a medium (CVSS 5.3) Cross-site Scripting vulnerability in best practical request tracker. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.8% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-10-2025
    PublishedVulnerability first disclosed.
  2. 24-10-2025
    Last modifiedVulnerability information updated.

Description

The Request Tracker software is vulnerable to a Stored XSS vulnerability in calendar invitation parsing feature, which displays invitation data without HTML sanitization. XSS vulnerability allows an attacker to send a specifically crafted e-mail enabling JavaScript code execution by displaying the ticket in the context of the logged-in user. This vulnerability affects versions from 5.0.4 through 5.0.8 and from 6.0.0 through 6.0.1.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.03 pp

From 0.42% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Best practical1 product
Debian1 product
  • request-tracker5< 5.0.7+dfsg-4+deb13u1 | < 5.0.7+dfsg-5
Ubuntu1 product
  • request-tracker5All versions (No fix recorded)

3 vendors · 3 products

References

5 links