Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Piranha (NuGet package) versions up to and including 12.0 are affected by a stored cross-site scripting flaw in the Text content block of Standard and Standard Archive Pages in the manager's page editor. An attacker who can enter content into these pages can have arbitrary JavaScript run in another user's browser. The source gives few details about the required privileges. No fixed version is listed.
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 |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0033, the 26th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 26 Sept 2025, 20:15 UTC Confirmed by NVD
- 31 Oct 2026, 15:22 UTC First seen by agentprime
- 31 Oct 2026, 15:22 UTC Confirmed by OSV