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CVE-2026-20254

Information Disclosure through External Content Restriction Bypass in Splunk Enterprise PUBLISHED

Description (CNA)

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the 'admin' or 'power' Splunk roles could craft a malicious classic dashboard that exfiltrates sensitive data to an external server when a higher-privileged user views it, bypassing the external content restriction through a Cascading Style Sheets (CSS) injection.<br><br>The Trusted Domains security check does not fully validate inline style attribute values, which can allow for outbound requests to untrusted domains and credential exfiltration when a victim views a crafted dashboard.

Affected (CNA)

Vendor / productVersions
Splunk / Splunk Enterpriseaffected 10.2 before 10.2.4; affected 10.0 before 10.0.7; affected 9.4 before 9.4.12; affected 9.3 before 9.3.13
Splunk / Splunk Cloud Platformaffected 10.3.2512 before 10.3.2512.13; affected 10.2.2510 before 10.2.2510.15; affected 10.1.2507 before 10.1.2507.23; affected 9.3.2411 before 9.3.2411.132

CWE

CWE-20

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.