CVE-2020-8865

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-03-23 · updated 2026-06-17
Weakness: CWE-23

Description

This vulnerability allows remote attackers to execute local PHP files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within edit.php. When parsing the params[template] parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10469.

Affected products

Debian Linux: 8.0
Horde Groupware: 5.2.22

References

https://lists.debian.org/debian-lts-announce/2020/04/msg00009.html
https://www.zerodayinitiative.com/advisories/ZDI-20-276/
https://lists.debian.org/debian-lts-announce/2020/04/msg00009.html
https://www.zerodayinitiative.com/advisories/ZDI-20-276/

Get alerted when CVE-2020-8865 or the next vulnerability affects your stack