EGroupware has SQL Injection in Nextmatch Filter Processing

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-22243: 0.43% estimated exploitation activity in the next 30 days; percentile 37.07 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Critical Authenticated SQL Injection in Nextmatch Widget Filter Processing A critical SQL Injection vulnerability exists in the core components of EGroupware, specifically in the Nextmatch filter processing. The flaw allows authenticated attackers to inject arbitrary SQL commands into the WHERE clause of database queries. This is achieved by exploiting a PHP type juggling issue where JSON decoding converts numeric strings into integers, bypassing the isint() security check used by the application. Details Root Cause Analysis The vulnerability exists in how the database abstraction layer (Api\Db) and high-level storage classes (Api\Storage\Base, infologso) process the colfilter array used in "Nextmatch" widgets. The application attempts to validate input using isint($key) to determine if an array key represents a raw SQL fragment that should be trusted. However, when processing JSON-based POST requests, PHP's jsondecode automatically converts numeric string keys (e.g., "0")…

Published by the source

28 Jan 2026, 20:39 UTC

Last modified by the source

28 Jan 2026, 20:39 UTC

Source last checked

26 Oct 2026, 14:35 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-rvxj-7f72-mhrx

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# Patch Next advisory brief: CVE-2026-22243

Advisory: EGroupware has SQL Injection in Nextmatch Filter Processing
IDs: CVE-2026-22243, GHSA-rvxj-7f72-mhrx
Record: https://patchnext.com/advisories/cve-2026-22243 (revision 1, source checked 26 Oct 2026, 14:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: egroupware/egroupware 26.0.20260113, 23.1.20260113. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist egroupware/egroupware: affected < 23.1.20260113; >= 26.0.20251208, < 26.0.20260113; fixed in 23.1.20260113, 26.0.20260113

## Suggested inspection (read-only)
- Packagist egroupware/egroupware: 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 egroupware/egroupware.
- 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-rvxj-7f72-mhrx (GitHub-reviewed advisory GHSA-rvxj-7f72-mhrx lists affected ranges: Packagist egroupware/egroupware >=0 =26.0.20251208 <26.0.20260113)

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