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CVE-2023-5631

Roundcube — Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability

Roundcube · CWE-79 — Cross-site scripting · in CISA KEV since 2023-10-26

KEV since 2023 · listed over a yearCISA KEVActively Exploited
75

EVRS 75 of 100 Urgent

Patch This Cycle

Rank 690 of 2,960 tracked

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Why it scores 75

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.769.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

roundcube -> 1.3.6+dfsg.1-1ubuntu0.1~esm4 | roundcube -> 1.4.3+dfsg.1-1ubuntu0.1~esm4 | roundcube -> 1.5.0+dfsg.1-2ubuntu0.1~esm3 | roundcube -> 1.6.4+dfsg-1~deb12u1 | roundcube -> 1.6.4+dfsg-1

Affected versions

  • webmail< 1.4.15>= 1.5.0 < 1.5.5>= 1.6.0 < 1.6.4
  • debian linux10.011.012.0
  • fedora39

Remediation

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

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 5.4 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.769 (99.55th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2023-11-16 · KEV since 2023 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. None known Metasploit
EUVD cross-referenceENISA's record: CVSS 6.1 (v3.1), assigned by ESET. Listed ENISA EUVD

Description

NVD

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.

What CISA says to do