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Fencer Vulns
critical 9.8

CVE-2020-8518 in the critical feed json

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

published 2020-02-17 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29384

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
71.7%
EPSS 71.7% chance of exploitation in 30 days, percentile 99.4%
public exploits
2
Metasploit, Exploit-DB

Summary

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

Patch / fix

  • php-horde-data Debian 12 2.1.5-1

debian advisories DEBIAN-CVE-2020-8518

Timeline

  1. First public exploit (Metasploit exploit/multi/http/horde_csv_rce)
  2. Published

Exploit prediction

71.73% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.