VULNERABILITY INTELLIGENCE

CVE-2020-8866

CVSS score6.5 MEDIUM

EPSS probability9.58%

CISA KEVNot currently listed

Published2020-03-23

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Description

This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.

Weakness classification

zdi-disclosures@trendmicro.com: CWE-434
nvd@nist.gov: CWE-434

Primary references

zdi-disclosures@trendmicro.com — Mailing List, Third Party Advisory
zdi-disclosures@trendmicro.com — Mailing List, Vendor Advisory
zdi-disclosures@trendmicro.com — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry