CVE-2020-13965

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.766 · 100 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · PoC

Likely / severe?

76.6% (100th) EPSS

CVSS 4.3 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2024-06-26remediate by 2024-07-17

required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-26

Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

cvss

Technical severity, 0–10. One row per scoring source.

6.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.14.7mediumAV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.16.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:Lsecondary · ENISA EU

v3.16.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:Lsecondaryexploitability 2.8 · impact 3.4

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-80US

exploits (1)

Public proof-of-concept and weaponised exploit code.

mbadanoiu/CVE-2020-13965CVE-2020-13965: Cross-Site Scripting via Malicious XML Attachment in Roundcube WebmailPoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Fedora Project Fedora≤ 32fstec_bduRU
Fedora Project Fedora≤ 31fstec_bduRU
The RoundCube Team RoundCube Webmail≤ 1.3.12fstec_bduRU
The RoundCube Team RoundCube Webmail1.4.0 → 1.4.5fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
debian debian linux= 10.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 31nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 32nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
roundcube webmail< 1.3.12nvdUScpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
roundcube webmail1.4.0 → 1.4.5nvdUScpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Bitnami roundcube< 1.3.12osvUSpkg:bitnami/roundcube
Bitnami roundcube1.4.0 → 1.4.5osvUSpkg:bitnami/roundcube

advisories (1)

Vendor and ecosystem advisories describing this.

BIT-roundcube-2020-139652024-03-06vendor · osvUS
An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2020-06-09modified 2026-06-17

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An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to exec…
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+52938 more

references (31)

External citations — patches, advisories, analysis.

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