Vulnerability · Published Oct 27, 2026 · Assigned by VulnCheck

CVE-2026-116897REDAXO before 5.21.4 Missing Authorization in Version and History Previews

Medium 6.5

In plain English

A medium-severity missing authorization in core from redaxo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 88.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

REDAXO core before 5.21.4 contains a missing authorization vulnerability in the structure/version and structure/history frontend preview modes, which do not check category or clang permissions for the previewed article. Any backend user, or one holding history[article_rollback], can set rex_version or rex_history_date with arbitrary article_id values to read unpublished working versions and historic or deleted content.

Affected products (as reported)

Vendor	Product	Versions
redaxo	core	0 – before 5.21.4

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-v4m9-jvvr-83cx) vendor-advisory
VulnCheck Advisory: REDAXO before 5.21.4 Missing Authorization in Version and History Previews third-party-advisory