How severe is CVE-2016-4552?

CVE-2016-4552 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-2016-4552 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4552?

CVE-2016-4552 affects Roundcube Webmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4552?

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

When was CVE-2016-4552 published?

CVE-2016-4552 was published on 2016-12-20 and last updated on 2026-06-17.

CVE-2016-4552

CVE-2016-4552 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% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Roundcube Webmail
Published: 2016-12-20
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.2.0 allows remote attackers to inject arbitrary web script or HTML via the href attribute in an area tag in an e-mail message.

Frequently asked questions

What is CVE-2016-4552?: Cross-site scripting (XSS) vulnerability in Roundcube Webmail before 1.2.0 allows remote attackers to inject arbitrary web script or HTML via the href attribute in an area tag in an e-mail message.
How severe is CVE-2016-4552?: CVE-2016-4552 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-2016-4552 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4552?: CVE-2016-4552 affects Roundcube Webmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4552?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4552 published?: CVE-2016-4552 was published on 2016-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:roundcube:webmail:1.2:rc:*:*:*:*:*:*

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