How severe is CVE-2016-4856?

CVE-2016-4856 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-2016-4856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4856?

CVE-2016-4856 primarily affects Splunk. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-4856?

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

When was CVE-2016-4856 published?

CVE-2016-4856 was published on 2017-05-12 and last updated on 2026-06-17.

CVE-2016-4856

CVE-2016-4856 is a medium-severity vulnerability in Splunk 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% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Splunk
Published: 2017-05-12
Last modified: 2026-06-17

Description

Cross-site scripting vulnerability in Splunk Enterprise 6.3.x prior to 6.3.5 and Splunk Light 6.3.x prior to 6.3.5 allows attacker with administrator rights to inject arbitrary web script or HTML via unspecified vectors.

Frequently asked questions

What is CVE-2016-4856?: Cross-site scripting vulnerability in Splunk Enterprise 6.3.x prior to 6.3.5 and Splunk Light 6.3.x prior to 6.3.5 allows attacker with administrator rights to inject arbitrary web script or HTML via unspecified vectors.
How severe is CVE-2016-4856?: CVE-2016-4856 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-2016-4856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4856?: CVE-2016-4856 primarily affects Splunk. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-4856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4856 published?: CVE-2016-4856 was published on 2017-05-12 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:splunk:splunk:6.3.0:*:*:*:enterprise:*:*:*
cpe:2.3:a:splunk:splunk:6.3.0:*:*:*:light:*:*:*
cpe:2.3:a:splunk:splunk:6.3.1:*:*:*:enterprise:*:*:*
cpe:2.3:a:splunk:splunk:6.3.1:*:*:*:light:*:*:*
cpe:2.3:a:splunk:splunk:6.3.2:*:*:*:enterprise:*:*:*
cpe:2.3:a:splunk:splunk:6.3.2:*:*:*:light:*:*:*
cpe:2.3:a:splunk:splunk:6.3.3:*:*:*:enterprise:*:*:*
cpe:2.3:a:splunk:splunk:6.3.3:*:*:*:light:*:*:*
cpe:2.3:a:splunk:splunk:6.3.4:*:*:*:enterprise:*:*:*
cpe:2.3:a:splunk:splunk:6.3.4:*:*:*:light:*:*:*

More vulnerabilities in Splunk

CVE-2026-20253 — Critical (CVSS 9.8): In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or…
CVE-2017-17067 — Critical (CVSS 9.8): Splunk Web in Splunk Enterprise 7.0.x before 7.0.0.1, 6.6.x before 6.6.3.2, 6.5.x before 6.5.6, 6.4.x before 6.4.9, and…
CVE-2016-10126 — Critical (CVSS 9.8): Splunk Web in Splunk Enterprise 5.0.x before 5.0.17, 6.0.x before 6.0.13, 6.1.x before 6.1.12, 6.2.x before 6.2.12,…
CVE-2013-6771 — Critical (CVSS 9.3): Directory traversal vulnerability in the collect script in Splunk before 5.0.5 allows remote attackers to execute…
CVE-2011-4644 — Critical (CVSS 9.3): Splunk 4.2.5 and earlier, when a Free license is selected, enables potentially undesirable functionality within an…
CVE-2022-32158 — Critical (CVSS 9.0): Splunk Enterprise deployment servers in versions before 8.1.10.1, 8.2.6.1, and 9.0 let clients deploy forwarder bundles…

All CVEs affecting Splunk →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →