Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-5631

CVE-2023-5631MEDIUM

Roundcube Roundcubemail — Stored XSS vulnerability in Roundcube

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  L  L  N    6.1   .7587   99.5   YES

AFFECTED
  Product        Versions  Fixed
  Roundcubemail  1.6.0 –   1.6.4

TIMELINE
  Oct 18  Reserved by ESET
  Oct 18  Published (CNA: ESET)
  Oct 26  Added to CISA KEV, remediation due 2023-11-16

CWE-79 · CNA: ESET · CVSS v3.1 · 16 references · KEV due November 16, 2023

Description

Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker to load arbitrary JavaScript code.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 18, 2023	Reserved	Reserved by ESET
October 18, 2023	Published	Published (CNA: ESET)
October 26, 2023	KEV ADDED	Added to CISA KEV, remediation due 2023-11-16

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Roundcube	Roundcubemail	—	1.6.0	1.6.4

Weaknesses

CWE-79

References (16)

Authoritative record: CVE-2023-5631 at cve.org

Vendors: roundcube

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-5631 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 Sunday, October 4, 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.