Read the docs
TI-2020-07120 Aliases CVE-2020-8866GHSA-xrh9-pr8p-fpqj

Unrestricted file upload in Horde Groupware Webmail Edition

Priority MEDIUM 41CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

EPSS 0.09579 95th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
HordeGroupware Webmail Edition5.2.22—No fix listedCNA
  • Groupware Webmail Edition VendorHorde Affected 5.2.22 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:horde:groupware:5.2.22:*:*:*:webmail:*:*:*5.2.22VulnerableHorde
cpe:2.3:a:horde:horde_form:*:*:*:*:*:*:*:*before 2.0.20VulnerableHorde
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:horde:groupware:5.2.22:*:*:*:webmail:*:*:* Versions 5.2.22 Vulnerable ·Horde
  • cpe:2.3:a:horde:horde_form:*:*:*:*:*:*:*:* Versions before 2.0.20 Vulnerable ·Horde
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8866
  2. 2026-10-03 Alias added: GHSA-xrh9-pr8p-fpqj

References

Advisory 3

  • TI-2020-06837 Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV… CVSS 3.1CRITICAL 9.8
  • TI-2022-12524 Horde Groupware Webmail Edition through 5.2.22 allows a reflection injection attack… CVSS 3.1HIGH 8.0
  • TI-2012-00202 Horde 3.3.12, Horde Groupware 1.2.10, and Horde Groupware Webmail Edition 1.2.10, as… CVSS 2.0HIGH 7.5
  • TI-2017-05066 In Horde_Crypt before 2.7.6, as used in Horde Groupware Webmail Edition through 5.2.17… CVSS 3.0HIGH 8.8
  • TI-2019-07239 Remote code execution was discovered in Horde Groupware Webmail 5.2.22 and 5.2.17. CVSS 3.1HIGH 8.8
  • TI-2008-06907 Horde Kronolith H3 2.1 before 2.1.7 and 2.2 before 2.2-RC2; Nag H3 2.1 before 2.1.4 and… CVSS 2.0HIGH 10.0
See all 45 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences