Vulnerability · Published Oct 27, 2026 · Assigned by VulnCheck

CVE-2026-116899REDAXO before 5.21.4 Broken Access Control in Slice Operations

Medium 6.5

In plain English

A medium-severity authorization bypass via user-controlled key 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 8% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 92.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

REDAXO before 5.21.4 contains a broken access control vulnerability that allows authenticated editors to modify slices in unauthorized categories by pairing a permitted article with a foreign slice id. Attackers can abuse content/edit delete and edit functions or the content_slice_status and content_move_slice APIs to delete, toggle, move, or overwrite other editors' slices.

Affected products (as reported)

Vendor	Product	Versions
redaxo	core	0 – before 5.21.4

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

GitHub Security Advisory (GHSA-5m63-c3qx-wq8v) vendor-advisory
VulnCheck Advisory: REDAXO before 5.21.4 Broken Access Control in Slice Operations third-party-advisory