How severe is CVE-2017-6820?

CVE-2017-6820 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-6820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6820?

CVE-2017-6820 primarily affects Roundcube Webmail. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-6820?

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

When was CVE-2017-6820 published?

CVE-2017-6820 was published on 2017-03-12 and last updated on 2026-06-17.

CVE-2017-6820

CVE-2017-6820 is a medium-severity vulnerability in Roundcube Webmail with a CVSS 3.x base score of 6.1. 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 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Roundcube Webmail
Published: 2017-03-12
Last modified: 2026-06-17

Description

rcube_utils.php in Roundcube before 1.1.8 and 1.2.x before 1.2.4 is susceptible to a cross-site scripting vulnerability via a crafted Cascading Style Sheets (CSS) token sequence within an SVG element.

Frequently asked questions

What is CVE-2017-6820?: rcube_utils.php in Roundcube before 1.1.8 and 1.2.x before 1.2.4 is susceptible to a cross-site scripting vulnerability via a crafted Cascading Style Sheets (CSS) token sequence within an SVG element.
How severe is CVE-2017-6820?: CVE-2017-6820 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-6820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6820?: CVE-2017-6820 primarily affects Roundcube Webmail. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-6820?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-6820 published?: CVE-2017-6820 was published on 2017-03-12 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.2.3:*:*:*:*:*:*:*

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