How severe is CVE-2025-20381?

CVE-2025-20381 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2025-20381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-20381?

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

Does CVE-2025-20381 have an EU (EUVD) identifier?

Yes. CVE-2025-20381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200993.

When was CVE-2025-20381 published?

CVE-2025-20381 was published on 2025-12-03 and last updated on 2026-06-17.

CVE-2025-20381

CVE-2025-20381 is a medium-severity vulnerability with a CVSS 3.x base score of 5.4. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-200993
Weakness: CWE-863
Published: 2025-12-03
Last modified: 2026-06-17

Description

In Splunk MCP Server app versions below 0.2.4, a user with access to the "run_splunk_query" Model Context Protocol (MCP) tool could bypass the SPL command allowlist controls in MCP by embedding SPL commands as sub-searches, leading to unauthorized actions beyond the intended MCP restrictions.

Frequently asked questions

What is CVE-2025-20381?: In Splunk MCP Server app versions below 0.2.4, a user with access to the "run_splunk_query" Model Context Protocol (MCP) tool could bypass the SPL command allowlist controls in MCP by embedding SPL commands as sub-searches, leading to unauthorized actions beyond the intended MCP restrictions.
How severe is CVE-2025-20381?: CVE-2025-20381 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2025-20381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-20381?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-20381 have an EU (EUVD) identifier?: Yes. CVE-2025-20381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200993.
When was CVE-2025-20381 published?: CVE-2025-20381 was published on 2025-12-03 and last updated on 2026-06-17.

References

https://advisory.splunk.com/advisories/SVD-2025-1210

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