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Critical, CVSS 9.6

Cross-site Scripting in kimai/kimai

CVE-2020-19825GHSA-r58m-v5pr-jhhq

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (kimai/kimai 1.1), 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
9.6 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS
  • CVE-2020-19825: 0.70% estimated exploitation activity in the next 30 days; percentile 53.11 (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.

Cross Site Scripting (XSS) vulnerability in kevinpapst kimai2 in /src/Twig/Runtime/MarkdownExtension.php, allows attackers to gain escalated privileges.

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

    Published from ghsa record GHSA-r58m-v5pr-jhhq

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-2020-19825

Advisory: Cross-site Scripting in kimai/kimai
IDs: CVE-2020-19825, GHSA-r58m-v5pr-jhhq
Record: https://patchnext.com/advisories/cve-2020-19825 (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: Critical (CVSS 9.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: kimai/kimai 1.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist kimai/kimai: affected < 1.1; fixed in 1.1

## Suggested inspection (read-only)
- Packagist kimai/kimai: 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 kimai/kimai.
- 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-r58m-v5pr-jhhq (GitHub-reviewed advisory GHSA-r58m-v5pr-jhhq lists affected ranges: Packagist kimai/kimai >=0 <1.1)

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