CVE-2026-76288

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ciscoCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
splunksplunk
10.4 ≤
𝑥
< 10.4.4
CNA
splunksplunk
10.2 ≤
𝑥
< 10.2.8
CNA
splunksplunk
10.0 ≤
𝑥
< 10.0.11
CNA
splunksplunk
9.4 ≤
𝑥
< 9.4.16
CNA