CVE-2020-8866 EXPLOIT
6.5
MEDIUM · CVSS 3.1 · EPSS 9.6% (pctl 95)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 6.5 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| EPSS | 9.58% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-434 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2020-03-23 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| debian | debian linux |
| horde | groupware |
| horde | horde form |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Horde Groupware Webmail Edition 5.2.22 - PHP File Inclusion | 2020-03-11 |
| exploit-db | Horde Groupware Webmail Edition 5.2.22 - PHAR Loading | 2020-03-11 |
References
- https://lists.debian.org/debian-lts-announce/2020/03/msg00036.html
- https://lists.horde.org/archives/announce/2020/001288.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-275/
- https://lists.debian.org/debian-lts-announce/2020/03/msg00036.html
- https://lists.horde.org/archives/announce/2020/001288.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-275/
→ the Explorer · watch your stack · NVD