High [CVE-2026-76288] Denial of Service (DoS) through Splunk Web Content-Type Header Parsing in Splunk Enterprise
This high-severity Splunk advisory covers CVE-2026-76288 affecting Splunk Enterprise.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
In Splunk Enterprise versions below 10.4.4, 10.2.8, 10.0.11, and 9.4.16, an unauthenticated user could send a single crafted request to the Splunk Web JavaScript logger endpoint and cause Splunk Web to stop responding to requests. Splunk Web remains unavailable until Splunk Enterprise is restarted.
The vulnerability is possible because Splunk Web does not limit request-header parsing before processing the request.
- Splunk Enterprise 10.4 before 10.4.4
- Splunk Enterprise 10.2 before 10.2.8
- Splunk Enterprise 10.0 before 10.0.11
- Splunk Enterprise 9.4 before 9.4.16
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
- 10.4.4
- 10.2.8
- 10.0.11
- 9.4.16
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
Mitigation checklist
- The vulnerability is possible because Splunk Web does not limit request-header parsing before processing the request.
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
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