Medium · CVSS 4.3CVE-2026-76264

Improper Authorization through the REST API in Splunk EnterpriseCVE-2026-76264

Answer in brief

CVE-2026-76264 records a Medium severity (CVSS 4.3) vulnerability in Improper Authorization through the REST API in Splunk Enterprise. The current sources do not mark it as known exploited. The current feed maps Splunk/Splunk Enterprise (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 7, 2026Updated Oct 7, 2026Source checked Oct 7, 2026First seen by HOL Oct 7, 2026Material review Oct 7, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Splunk/Splunk Enterprise (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Splunk/Splunk Enterprisegeneric	>=10.4 <10.4.2 \|\| >=10.2 <10.2.6 \|\| >=10.0 <10.0.10 \|\| >=9.4 <9.4.15	10.4.2, 10.2.6, 10.0.10, 9.4.15

Recommended response

Check inventory. Check lockfiles and deployed manifests for Splunk/Splunk Enterprise.
Review the reported fix. Source-reported solution: Upgrade Splunk Enterprise to versions 10.4.3, 10.2.7, 10.0.10, and 9.4.15, or higher. After upgrading, set `scripted_lookup_raw_write_enforcement = block` in the `limits.conf` configuration file under [lookup], and then restart Splunk Enterprise. For more information see [Configuration file reference](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/configuration-file-reference/10.2.7-configuration-file-reference/limits%2Econf) in the Splunk documentation.

Evidence timeline and material changes

Published upstream
Oct 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 7, 2026

Sources and claim methodology

Source referenceadvisory.splunk.com

Upstream source description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.10, and 9.4.15, a user who does not hold the "admin" or "power" Splunk roles could create or edit scripted lookup definitions through raw configuration endpoints. The vulnerability is possible because raw transforms configuration write paths do not apply external lookup capability checks before saving scripted lookup settings.

Quoted source text, attributed separately from HOL analysis.