How severe is CVE-2015-2839?

CVE-2015-2839 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-2839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2839?

CVE-2015-2839 affects Citrix Netscaler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-2839?

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

When was CVE-2015-2839 published?

CVE-2015-2839 was published on 2015-04-03 and last updated on 2026-06-17.

CVE-2015-2839

CVE-2015-2839 is a medium-severity vulnerability in Citrix Netscaler 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% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Citrix Netscaler
Published: 2015-04-03
Last modified: 2026-06-17

Description

The Nitro API in Citrix NetScaler before 10.5 build 52.3nc uses an incorrect Content-Type when returning an error message, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the file_name JSON member in params/xen_hotfix/0 to nitro/v1/config/xen_hotfix.

Frequently asked questions

What is CVE-2015-2839?: The Nitro API in Citrix NetScaler before 10.5 build 52.3nc uses an incorrect Content-Type when returning an error message, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the file_name JSON member in params/xen_hotfix/0 to nitro/v1/config/xen_hotfix.
How severe is CVE-2015-2839?: CVE-2015-2839 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-2839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2839?: CVE-2015-2839 affects Citrix Netscaler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-2839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2839 published?: CVE-2015-2839 was published on 2015-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:citrix:netscaler:10.5:*:*:*:*:*:*:*

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