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Advisory record · GHSA-fw48-7qf9-455m

Piranha has stored cross-site scripting (XSS) vulnerability

CVSS 6.1 MediumEPSS 0.0021 · 11th percentile

Published by the GitHub Advisory Database at 22 Dec 2025, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
PiranhaNuGet<=12.0.0No fixed version yet
Identifiers
GHSA-fw48-7qf9-455m · CVE-2025-67290
Weakness (CWE)
CWE-79
Tags
Published
22 Dec 2025
Updated
22 Dec 2025

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Piranha (versions up to and including 12.0.0) has a stored cross-site scripting flaw in the Page Settings module, where the Excerpt field does not properly handle injected content. An attacker who can enter a crafted payload into that field can run arbitrary scripts or HTML in users' browsers. The source gives few details about the required privileges. No fixed version is listed.

Written 9 Nov 2026.

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

ScoreRatingCVSSVectorSource
6.1 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N ADP (CISA-ADP)
  • CISA KEV Not listed.
  • EPSS 0.0021, the 11th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 22 Dec 2025, 20:15 UTC Confirmed by NVD
  2. 31 Oct 2026, 15:22 UTC First seen by agentprime
  3. 31 Oct 2026, 15:22 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.