How severe is CVE-2024-42008?

CVE-2024-42008 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-42008 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 34% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42008?

CVE-2024-42008 affects Roundcube Webmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42008?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-42008 have an EU (EUVD) identifier?

Yes. CVE-2024-42008 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39390.

When was CVE-2024-42008 published?

CVE-2024-42008 was published on 2024-08-05 and last updated on 2026-06-17.

CVE-2024-42008

CVE-2024-42008 is a critical-severity vulnerability in Roundcube Webmail with a CVSS 3.x base score of 9.3. Its EPSS exploit-prediction score of 34% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 34% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39390
Weakness: CWE-79
Affected product: Roundcube Webmail
Published: 2024-08-05
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2024-42008?: 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.
How severe is CVE-2024-42008?: CVE-2024-42008 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-42008 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 34% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42008?: CVE-2024-42008 affects Roundcube Webmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42008?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-42008 have an EU (EUVD) identifier?: Yes. CVE-2024-42008 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39390.
When was CVE-2024-42008 published?: CVE-2024-42008 was published on 2024-08-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*

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