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.NET
.NET NuGet
Not in CISA KEV
MEDIUM severity

CVE-2025-57692 — Piranha

MEDIUM

CVE-2025-57692 is a medium-severity (CVSS 6.8) Cross-site Scripting (XSS) vulnerability in Piranha. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

PiranhaCMS stored XSS

Also known asGHSA-456v-f425-8mcv
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-57692.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs26th percentile — riskier than 26% of all scored CVEsHighest risk
0.00%0.28%0.55%0.83%0.1%0.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
.NETPiranha

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

PiranhaCMS 12.0 allows stored XSS in the Text content block of Standard and Standard Archive Pages via /manager/pages, enabling execution of arbitrary JavaScript in another user s browser.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
.NETNuGetPiranhaall versionsNo fix

Affected Products

1 product · 1 configurations
Application
piranha cmsdotnetfoundation
1 version
12.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Piranha, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of Piranha for CVE-2025-57692. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

PiranhaCMS 12.0 allows stored XSS in the Text content block of Standard and Standard Archive Pages via /manager/pages, enabling execution of arbitrary JavaScript in another user s browser.
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CVE-2025-57692: Piranha: PiranhaCMS stored XSS