Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
FitNesse versions prior to 20220319 are vulnerable to cross-site scripting. A remote, unauthenticated attacker can get a user to open a specially crafted link, which runs an arbitrary script in that user's web browser. Upgrade the fitnesse package to version 20220319 or later.
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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.1 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0057, the 47th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:11 UTC First seen by agentprime
- 31 Oct 2026, 15:11 UTC Confirmed by OSV