REDAXO: Unwhitelisted ORDER BY Column in rex_list Allows Authenticated Column Enumeration

Exploitation

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

CVSS

4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-62998: 0.39% estimated exploitation activity in the next 30 days; percentile 32.94 (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 The rexlist component reads the SQL sort column directly from the sort GET parameter without validating it against the set of columns declared sortable via setColumnSortable(). Although the value is wrapped in backticks via escapeIdentifier() (preventing classical SQL injection), this still allows any authenticated backend user to ORDER BY any column in the query's FROM tables, including unselected sensitive columns such as password from the rexuser table, and perform error-based column enumeration. Details File: redaxo/src/core/lib/list.php:976-982 — getSortColumn() returns the raw request parameter without whitelist check: File: redaxo/src/core/lib/list.php:899-911 — prepareQuery() uses it directly in the ORDER BY clause: The users list queries rexuser which contains password, previouspasswords, passwordchangerequired — not in the SELECT. Specifying a non-existent column name produces a MySQL Unknown column exception whose message is propagated to the user, confirming or…

Published by the source

24 Sep 2026, 14:57 UTC

Last modified by the source

24 Sep 2026, 15:00 UTC

Source last checked

26 Oct 2026, 14:53 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-4f5f-j737-pm58

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-4f5f-j737-pm58

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# Patch Next advisory brief: CVE-2026-62998

Advisory: REDAXO: Unwhitelisted ORDER BY Column in rex_list Allows Authenticated Column Enumeration
IDs: CVE-2026-62998, GHSA-4f5f-j737-pm58
Record: https://patchnext.com/advisories/cve-2026-62998 (revision 2, source checked 26 Oct 2026, 14:53 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: redaxo/source 5.21.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist redaxo/source: affected <= 5.21.1; fixed in 5.21.2

## Suggested inspection (read-only)
- Packagist redaxo/source: 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 redaxo/source.
- 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://osv.dev/vulnerability/GHSA-4f5f-j737-pm58 (OSV record GHSA-4f5f-j737-pm58 lists affected ranges: Packagist redaxo/source >=0 <5.21.2 (fixed))
- Verified: https://github.com/advisories/GHSA-4f5f-j737-pm58 (GitHub-reviewed advisory GHSA-4f5f-j737-pm58 lists affected ranges: Packagist redaxo/source >=0 <=5.21.1)

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