CVE-2023-43770 kev in the critical feed json
Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of…
published 2023-09-22 3 y ago modified 2026-06-17 4 mo ago also BIT-roundcube-2023-43770 , EUVD-2023-48147
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Exploited
- added 2024-02-12
- epss
- 63.7%
- EPSS 63.7% chance of exploitation in 30 days, percentile 99.2%
- public exploits
- 0
- none known
Summary
Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior.
Patch / fix
cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- bitnami roundcube 1.4.14, 1.5.4, 1.6.3
- roundcube webmail 1.4.14, 1.5.4, 1.6.3
- roundcube Debian 12 1.6.3+dfsg-1~deb12u1
- roundcube Debian 14, Debian 13 1.6.3+dfsg-1
debian advisories DEBIAN-CVE-2023-43770
- roundcube Ubuntu Pro 16.04 LTS 1.2~beta+dfsg.1-0ubuntu1+esm3
- roundcube Ubuntu Pro 18.04 LTS 1.3.6+dfsg.1-1ubuntu0.1~esm3
- roundcube Ubuntu Pro 20.04 LTS 1.4.3+dfsg.1-1ubuntu0.1~esm3
- roundcube Ubuntu Pro 22.04 LTS 1.5.0+dfsg.1-2ubuntu0.1~esm2
ubuntu advisories UBUNTU-CVE-2023-43770
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Timeline
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 2 y ago
- Patch by
- 2024-03-04 (2 y ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- Roundcube, Webmail
- CISA name
- Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
ATT&CK techniques
How it is exploited and what it leads to, in MITRE ATT&CK terms.
- T1189 Drive-by Compromise exploitation
- T1059 Command and Scripting Interpreter primary impact
- T1082 System Information Discovery secondary impact
kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
63.66% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | roundcube | <1.4.14 >=1.5.0, <1.5.4 >=1.6.0, <1.6.3 |
1.4.14 1.5.4 1.6.3 |
Affected products
- roundcube webmail
- debian debian_linux
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/roundcube/roundcubemail/commit/e92ec206a886461245e1672d8530cc93c618a49b
patch, web
-
roundcube.net
/news/2023/09/15/security-update-1.6.3-released
release-notes, web
-
lists.debian.org
/debian-lts-announce/2023/09/msg00024.html
mailing-list, web
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43770
government-resource, us-government-resource
Sources
- CVE List CVE-2023-43770
- NVD CVE-2023-43770
- OSV BIT-roundcube-2023-43770
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.