How severe is CVE-2012-6121?

CVE-2012-6121 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-6121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-6121?

CVE-2012-6121 primarily affects Roundcube Webmail. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-6121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-6121 published?

CVE-2012-6121 was published on 2013-02-24 and last updated on 2026-06-16.

CVE-2012-6121

CVE-2012-6121 is a medium-severity vulnerability in Roundcube Webmail with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Roundcube Webmail
Published: 2013-02-24
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 0.8.5 allows remote attackers to inject arbitrary web script or HTML via a (1) data:text or (2) vbscript link.

Frequently asked questions

What is CVE-2012-6121?: Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 0.8.5 allows remote attackers to inject arbitrary web script or HTML via a (1) data:text or (2) vbscript link.
How severe is CVE-2012-6121?: CVE-2012-6121 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-6121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6121?: CVE-2012-6121 primarily affects Roundcube Webmail. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-6121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-6121 published?: CVE-2012-6121 was published on 2013-02-24 and last updated on 2026-06-16.

References

Affected products (38)

cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.1:beta:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.1:beta2:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.1:rc1:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.1:rc2:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.1:stable:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.2:alpha:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.2:beta:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.2:stable:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.3:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.3:beta:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.3:rc1:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.3:stable:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.3.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.4:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.4:beta:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.4.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5:beta:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5:rc:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.5.4:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.6:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.7:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.7.3:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:0.8.3:*:*:*:*:*:*:*

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