How severe is CVE-2015-5381?

CVE-2015-5381 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-2015-5381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5381?

CVE-2015-5381 primarily affects Roundcube Roundcube Webmail. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5381?

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

When was CVE-2015-5381 published?

CVE-2015-5381 was published on 2017-05-23 and last updated on 2026-06-17.

CVE-2015-5381

CVE-2015-5381 is a medium-severity vulnerability in Roundcube 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: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Roundcube Roundcube Webmail
Published: 2017-05-23
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox parameter to the default URI.

Frequently asked questions

What is CVE-2015-5381?: Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox parameter to the default URI.
How severe is CVE-2015-5381?: CVE-2015-5381 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-2015-5381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5381?: CVE-2015-5381 primarily affects Roundcube Roundcube Webmail. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-5381?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-5381 published?: CVE-2015-5381 was published on 2017-05-23 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:roundcube:roundcube_webmail:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.1:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.1:beta:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:1.1:rc:*:*:*:*:*:*

More vulnerabilities in Roundcube Roundcube Webmail

CVE-2015-5383 — High (CVSS 7.5): Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to obtain sensitive information by reading files in the…
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