Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-43770

CVE-2023-43770MEDIUM

n/a n/a — Roundcube Webmail

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  L  L  N    6.1   .6366   99.2   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Sep 22  Reserved by mitre
  Sep 22  Published (CNA: mitre)
  Feb 12  Added to CISA KEV, remediation due 2024-03-04

CWE-79 · CNA: mitre · CVSS v3.1 · 4 references · KEV due March 4, 2024

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 22, 2023	Reserved	Reserved by mitre
September 22, 2023	Published	Published (CNA: mitre)
February 12, 2024	KEV ADDED	Added to CISA KEV, remediation due 2024-03-04

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-79

References (4)

Authoritative record: CVE-2023-43770 at cve.org

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-43770 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.