CVE-2020-8518

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data,...

9.8 CriticalPublic exploitFix available

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

71.7%Up 22.1 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: CVE-2020-8518
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-94
Updated: 2026-11-02

CVE List No score

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: CVE-2020-8518
Updated: 2026-11-02

EUVDEUVD-2020-29384 No score

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: EUVD-2020-29384
Updated: 2026-11-03

GitHub AdvisoriesGHSA-v54x-qq77-866f No score

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data,...

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: GHSA-v54x-qq77-866f
Weakness: CWE-94
Updated: 2026-11-02

OSV 9.8

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: CVE-2020-8518
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-8518 9.8

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: DEBIAN-CVE-2020-8518
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-8518 9.8

Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.

Record: UBUNTU-CVE-2020-8518
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`php-horde-data` Debian:12	before 2.1.5-1	2.1.5-1
`php-horde-data` Debian:8	before 2.1.0-5+deb8u1, plus listed versions 2.1.0-5	2.1.0-5+deb8u1
`php-horde-data` Ubuntu:16.04:LTS	All versions, plus listed versions 2.1.3-12.1.3-22.1.4-12.1.4-1ubuntu1	None known
`php-horde-data` Ubuntu:18.04:LTS	All versions, plus listed versions 2.1.4-32.1.4-3ubuntu1	None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Horde Groupware Webmail Edition 5.2.22 - Remote Code Execution	2020-03-10
Metasploit	Horde CSV import arbitrary PHP code execution	2020-02-07

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, Metasploit, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-8518 is a critical vulnerability (CVSS 9.8) in Horde Groupware, published February 17, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 71.7%, the 99th percentile. Fixed in php-horde-data 2.1.5-1.

References

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