CVE-2020-8518
CriticalPublic exploitHorde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.
Published Feb 17, 2020 · Updated Aug 5, 2026 · Also known as DEBIAN-CVE-2020-8518, DLA-2174-1, UBUNTU-CVE-2020-8518
Key Facts
Patch immediately- CVE-2020-8518 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Groupware (Horde), Debian Linux, Fedora (Fedoraproject) and 1 more product.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 72% probability of exploitation in the next 30 days.
- Fixed versions are available, including php-horde-data 2.1.0-5+deb8u1, php-horde-data 2.1.5-1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
72%
Higher than 99.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-8518 brief as a PDF
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Description
Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.
Affected Products
13 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| GroupwareHorde | 5.2.22 | n/a |
| Debian LinuxDebian | 8.0 | n/a |
| FedoraFedoraproject | 30, 31 | n/a |
| php-horde-datadebian | See advisory | 2.1.5-1 |
Patched Releases
php-horde-data
2.1.0-5+deb8u1, 2.1.5-1
Timeline
Publicly disclosed
Feb 17, 2020
Last updated
Aug 5, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- advisory[debian-lts-announce] 20200415 [SECURITY] [DLA 2174-1] php-horde-data security update
- advisoryhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2PRPIFQDGYPQ3F2TF2ETPIL7IYNSVVZQ/
- advisoryhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKTNYDBDVJNMVC7QPXQI7CMPLX3USZ2T/
- advisoryhttps://lists.horde.org/archives/announce/2020/001285.html
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2020-8518
FAQ
Common Questions.
Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.
Affected: Groupware (Horde) versions 5.2.22; Debian Linux versions 8.0; Fedora (Fedoraproject) versions 30, 31, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including php-horde-data 2.1.0-5+deb8u1, php-horde-data 2.1.5-1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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