How severe is CVE-2015-5521?

CVE-2015-5521 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2015-5521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5521?

CVE-2015-5521 affects Blackcat-cms Blackcat Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-5521?

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

When was CVE-2015-5521 published?

CVE-2015-5521 was published on 2015-07-14 and last updated on 2026-06-17.

CVE-2015-5521

CVE-2015-5521 is a medium-severity vulnerability in Blackcat-cms Blackcat Cms with a CVSS 3.x base score of 4.8. 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 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Blackcat-cms Blackcat Cms
Published: 2015-07-14
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in BlackCat CMS 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the name in a new group to backend/groups/index.php.

Frequently asked questions

What is CVE-2015-5521?: Cross-site scripting (XSS) vulnerability in BlackCat CMS 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the name in a new group to backend/groups/index.php.
How severe is CVE-2015-5521?: CVE-2015-5521 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2015-5521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5521?: CVE-2015-5521 affects Blackcat-cms Blackcat Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-5521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-5521 published?: CVE-2015-5521 was published on 2015-07-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:blackcat-cms:blackcat_cms:1.1.2:*:*:*:*:*:*:*

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