# CVE-2025-65621: snipe-it XSS — Fixed in 8.3.4

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

# CVE-2025-65621 — snipe-it

MEDIUM 

CVE-2025-65621 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in snipe/snipe-it. A fix is available for snipe/snipe-it — see the affected versions and patch details below.

Snipe-IT is vulnerable to stored cross-site scripting

Also known as[GHSA-fww5-m9wc-jcjc](/vulnerability/GHSA-fww5-m9wc-jcjc)

Published

Dec 1, 2025

Updated

Nov 5, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 9, 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-2025-65621.

## EPSS Exploitation Probability

[via FIRST.org ↗](https://www.first.org/epss/)

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs8th percentile — riskier than 8% of all scored CVEsHighest risk

0.00%0.23%0.46%0.69%0.0%0.2%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/).

## How urgent is this, really

## Where this sits among everything scored

## Real-World Exposure

1 pkg affected

🐘`snipe/snipe-it`

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

## Description

Snipe-IT before 8.3.4 allows stored XSS, allowing a low-privileged authenticated user to inject JavaScript that executes in an administrator's session, enabling privilege escalation.

## Affected Packages

1 total 1 fixed

Ecosystem

Package

Vulnerable range

Fix

🐘Packagist

`snipe/snipe-it` 

all versions

8.3.4`composer require snipe/snipe-it:^8.3.4`

## Affected Products

1 product · 1 configurations

Application

`snipe-it`snipeitapp

< 8.3.4

range

## Detection & mitigation playbook

Open-source dependency

1.  ### Detect
    
    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for snipe/snipe-it, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
    
2.  ### Fix
    
    Update snipe/snipe-it to 8.3.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-65621 is resolved across your whole dependency graph.
    
3.  ### Workarounds
    
    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

Snipe-IT before 8.3.4 allows stored XSS, allowing a low-privileged authenticated user to inject JavaScript that executes in an administrator's session, enabling privilege escalation.

O3 Security · Impact-Aware SCA

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