How severe is GHSA-fw48-7qf9-455m?

No CVSS score has been assigned to GHSA-fw48-7qf9-455m yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-fw48-7qf9-455m?

GHSA-fw48-7qf9-455m affects the following packages: Piranha (NuGet). Ecosystems affected: NuGet.

How do I fix GHSA-fw48-7qf9-455m?

The records we use list no patched version of Piranha for GHSA-fw48-7qf9-455m. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

How do I detect GHSA-fw48-7qf9-455m in my NuGet dependencies?

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.

How do I mitigate GHSA-fw48-7qf9-455m if there is no patch (or I can't update yet)?

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.

Is GHSA-fw48-7qf9-455m actively exploited in the wild?

No public exploit code has been indexed for GHSA-fw48-7qf9-455m yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-fw48-7qf9-455m?

GHSA-fw48-7qf9-455m has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 12th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-fw48-7qf9-455m?

GHSA-fw48-7qf9-455m is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-fw48-7qf9-455m published, and has it been updated?

GHSA-fw48-7qf9-455m was published on December 22, 2025 and was last updated on December 22, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

.NET NuGet

Not in CISA KEV

Piranha has stored cross-site scripting (XSS) vulnerabilityGHSA-fw48-7qf9-455m

GHSA-fw48-7qf9-455m is a 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.

Also known asCVE-2025-67290

Published

Dec 22, 2025

Updated

Dec 22, 2025

Affected

1 pkg

Patched

See advisory

Exploits

None indexed

Exploitation data as of Nov 11, 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 GHSA-fw48-7qf9-455m.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs12th percentile — riskier than 12% of all scored CVEsHighest risk

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

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

A stored cross-site scripting (XSS) vulnerability in the Page Settings module of Piranha CMS v12.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Excerpt field.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`Piranha`	all versions	No fix

Affected Products

1 product · 1 configurations

Application

piranha cmsdotnetfoundation

1 version

12.1

Detection & mitigation playbook

Open-source dependency

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.
Remediation status
The records we use list no patched version of Piranha for GHSA-fw48-7qf9-455m. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
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

O3 Security · Impact-Aware SCA

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