CVE-2024-42008

Webmail vulnerability

CVSS

9.3

EPSS

34.2%

EPSS pct

98th

Exploited

No known

A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() 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 malicious e-mail attachment served with a dangerous Content-Type header.

Affected vendor

Roundcube

Affected product

Webmail

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2024-08-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity.

Its EPSS score of 34.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2024-42008

Confirm whether Roundcube Webmail is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2024-42008.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-42008

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2024-42008 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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