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Fencer Intel
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 6y ago modified 4mo 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 and 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

Is CVE-2020-8518 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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, 2026-11-09).

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 Intel 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.