CVE-2026-20254: Information Disclosure through External Content Restriction Bypass in Splunk Enterprise
Splunk · Splunk Enterprise
Vendor fix available · Affected: Splunk Enterprise · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 35% of scored CVEs
DescriptionCVE.org
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 products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Splunk · Splunk Enterprisefrom 10.2 before 10.2.4; from 10.0 before 10.0.7; from 9.4 before 9.4.12; from 9.3 before 9.3.13
- Splunk · Splunk Cloud Platformfrom 10.3.2512 before 10.3.2512.13; from 10.2.2510 before 10.2.2510.15; from 10.1.2507 before 10.1.2507.23; from 9.3.2411 before 9.3.2411.132
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-20254 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.