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Medium, CVSS 5.8

nilsteampassnet/teampass vulnerable to stored cross-site scripting (XSS)

CVE-2023-2021GHSA-4h2q-84w7-4mhx

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (nilsteampassnet/teampass 3.0.3), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
5.8 · CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L
EPSS
  • CVE-2023-2021: 0.36% estimated exploitation activity in the next 30 days; percentile 30.15 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

nilsteampassnet/teampass prior to 3.0.3 is vulnerable to stored cross-site scripting (XSS) in the description parameter of a folder.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-4h2q-84w7-4mhx

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2023-2021

Advisory: nilsteampassnet/teampass vulnerable to stored cross-site scripting (XSS)
IDs: CVE-2023-2021, GHSA-4h2q-84w7-4mhx
Record: https://patchnext.com/advisories/cve-2023-2021 (revision 1, source checked 26 Oct 2026, 14:05 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: nilsteampassnet/teampass 3.0.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist nilsteampassnet/teampass: affected < 3.0.3; fixed in 3.0.3

## Suggested inspection (read-only)
- Packagist nilsteampassnet/teampass: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on nilsteampassnet/teampass.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-4h2q-84w7-4mhx (GitHub-reviewed advisory GHSA-4h2q-84w7-4mhx lists affected ranges: Packagist nilsteampassnet/teampass >=0 <3.0.3)

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