CVE-2026-27823
High
Description
A vulnerability has been identified in EGroupware that may lead to Remote Code Execution (RCE). The issue allows an authenticated attacker to execute arbitrary commands on the server. If user self-registration is enabled, the vulnerability may be exploitable without prior authentication. The vulnerability stems from improper authorization checks combined with a file write primitive and an arbitrary file read vulnerability, which together enable full system compromise. This has been patched in versions 26.2.20260224 and 23.1.20260224.
SeverityHigh
CVSS8.7
Exploit probability—
ProductEgroupware/egroupware
PublishedJul 20, 2026
First seenJul 20, 2026
Weakness typeCWE-285CWE-285
How to fix
Update
- egroupware/egroupware26.2.20260224, 23.1.20260224 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| egroupware/egroupwarePackagist | 26.0.20251208 ≤ v < 26.2.20260224, v < 23.1.20260224 | 26.2.20260224, 23.1.20260224 |
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