FRDE Sign in Free trial
Background exploitation KEV catalog No authentication
CVE-2024-42009

RoundCube Webmail Cross-Site Scripting Vulnerability

A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in…

CheckOps priority index
8.6/10 Patch within 24 h
Severity9.3
Probability8.3
Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 82.9% higher than 99.7% of CVEs
CVSS 3.1 9.3 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:
Exploited for 512 days 09 Jun 2025
CISA due date 30 Jun 2025 for US federal agencies

Exploitation probability EPSS · FIRST

05010025 Sep05 Oct15 Oct24 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

  • KEV catalog (CISA)09 Jun 2025
  • Exploited in EUVD (ENISA)09 Jun 2025
  • Used by ransomwareno
  • EPSS above 10 %82.9%
  • No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.

Affected products

Webmail
Weaknesses (CWE)
CWE-79

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

  5. EPSS peak: 82.9%

References

Other exploited vulnerabilities from the same vendor

  • CVE-2025-68461RoundCube Webmail Cross-site Scripting Vulnerability
    6.1 · Background exploitation
  • CVE-2025-49113RoundCube Webmail Deserialization of Untrusted Data Vulnerability
    8.7 · Background exploitation
  • CVE-2024-37383RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability
    7.1 · Background exploitation
  • CVE-2020-13965Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
    7.2 · Background exploitation
  • CVE-2023-43770Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
    6.7 · Background exploitation
  • CVE-2023-5631Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
    7.1 · Background exploitation

Are you affected?

CheckOps reads your SBOMs and scans, and alerts you as soon as one of your dependencies is exploited.

Get notified at launch

Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities