CVE-2026-76288Denial of Service (DoS) through Splunk Web Content-Type Header Parsing in Splunk Enterprise
Updated under an hour ago ()
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It affects Splunk Enterprise. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.37%, higher than 30% of scored CVEs.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.37% (percentile 30)
- Assigned by
- cisco
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 22, 2026
- First seen by InfoSec Signals
- Oct 21, 2026
Affected products
Splunk Splunk Enterprise splunk:enterprise (from the name) | from 10.4 before 10.4.4; from 10.2 before 10.2.8; from 10.0 before 10.0.11; from 9.4 before 9.4.16 | CNA record |
References
- https://advisory.splunk.com/advisories/SVD-2026-1007
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.