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Public proof of conceptFix available

CVE-2020-12640

A public proof of concept exists; no exploitation attested.

  • Published2020-05-04
  • Fixed in1.4.4 · 1.3.11 · 1.2.10
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php.

Timeline

dates in UTC
  1. 2020-05-0415:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-02 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-12640?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12640?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Roundcube webmail
BranchAffectedFixed in
1.4≥ 1.4.0, < 1.4.41.4.4
1.3≥ 1.3.0, < 1.3.111.3.11
1.2≥ 1.2.0, < 1.2.101.2.10
Opensuse leap
BranchAffectedFixed in
15.1= 15.1no fix published
15.2= 15.2no fix published
Opensuse backports sle
BranchAffectedFixed in
15.0= 15.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • roundcubeUbuntu:Pro:22.04:LTSall versions · fixed in 1.5.0+dfsg.1-2ubuntu0.1~esm1
  • roundcubeUbuntu:Pro:20.04:LTSall versions · fixed in 1.4.3+dfsg.1-1ubuntu0.1~esm1
  • roundcubeUbuntu:Pro:20.04:LTSall versions · fixed in 1.4.3+dfsg.1-1ubuntu0.1~esm2
  • roundcubeUbuntu:Pro:18.04:LTSall versions · fixed in 1.3.6+dfsg.1-1ubuntu0.1~esm2
  • roundcubeUbuntu:Pro:16.04:LTSall versions · fixed in 1.2~beta+dfsg.1-0ubuntu1+esm2
  • roundcubeDebian:14all versions · fixed in 1.4.4+dfsg.1-1
  • roundcubeDebian:13all versions · fixed in 1.4.4+dfsg.1-1
  • roundcubeDebian:12all versions · fixed in 1.4.4+dfsg.1-1

4 more package ranges on OSV.dev

Vendor advisories

  • CVE-2020-12640 Red Hat Product Security

    roundcubemail: local file inclusion and code execution via crafted plugins option

Full record on NVD

Fix

  1. Update Roundcube webmail to 1.4.4 · 1.3.11 · 1.2.10

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedmbadanoiu/CVE-2020-12640
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-22read 2026-10-23
  • FIRST EPSSEPSS score6.7 %2026-11-02
  • PoC-in-GitHubproof of concept1read 2026-11-02
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-05-04
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-12640?

Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php.

Is CVE-2020-12640 actively exploited?

Active exploitation of CVE-2020-12640 has not been confirmed. Its EPSS score was 6.7% on 2026-11-02, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12640?

CVE-2020-12640 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Same product first, then the same vendor advisory and the same publication week.

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Sources for this record