CVE-2020-12640Public exploitNetwork attack vector

Code execution via unsanitized plugin pathname

Published May 4, 2020 · Updated Aug 4, 2024

Path traversal in Roundcube Webmail before 1.4.4 allows remote attackers to include local PHP files and execute code through its installer. The rcube_plugin_api load_plugin() and get_info() paths use an unfiltered plugin name twice to construct and include a PHP pathname outside the plugins directory. Exploitation requires public installer access and a PHP file at a known local path; successful inclusion executes that file in the webmail process.

CVSS severity9.8
Critical
EPSS probability6.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Roundcube Webmail before 1.4.4 allows remote attackers to include local PHP files and execute code through its installer. The rcube_plugin_api load_plugin() and get_info() paths use an unfiltered plugin name twice to construct and include a PHP pathname outside the plugins directory. Exploitation requires public installer access and a PHP file at a known local path; successful inclusion executes that file in the webmail process.

The record

CVE
CVE-2020-12640
Published
May 4, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 4, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8Canonical Ubuntu SecurityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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