# CVE-2026-76288: Denial of Service (DoS) through Splunk Web Content-Type Header Parsing in Splunk Enterprise

> CVE-2026-76288: Denial of Service (DoS) through Splunk Web Content-Type Header Parsing in Splunk Enterprise. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76288
Last updated: 2026-10-22T16:57:10Z

- Published: 2026-10-21 22:51 UTC · Updated: 2026-10-22 16:57 UTC · Assigner: cisco
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.47%, 41th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-400

## Description

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.

## Affected vendors and products

- Splunk: Splunk Enterprise

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-76288)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76288)
- [https://advisory.splunk.com/advisories/SVD-2026-1007](https://advisory.splunk.com/advisories/SVD-2026-1007)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-76288 · Markdown: https://rewindex.com/cve/CVE-2026-76288.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76288 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:13.200Z