4.3

CVE-2026-76256: splunk

CVSS: 4.3v3.1MediumAnalyzed
Published 19-08-2026Last modified 26-08-2026
Open JSON

Vulnerability summary

CVE-2026-76256 is a medium (CVSS 4.3) vulnerability in splunk. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.4% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-08-2026
    PublishedVulnerability first disclosed.
  2. 26-08-2026
    Last modifiedVulnerability information updated.

Description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the "admin" or "power" Splunk roles could read sensitive Security Assertion Markup Language setup and instance settings information through Splunk Secure Gateway Representational State Transfer (REST) API endpoints. The vulnerability is possible because the affected Security Assertion Markup Language setup and instance settings REST API endpoints do not enforce authorization requirements before returning configuration information.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.07 pp

From 0.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Splunk3 products
  • splunk≥ 9.4.0, < 9.4.14 | ≥ 10.0.0, < 10.0.9 | ≥ 10.2.0, < 10.2.6 | ≥ 10.4.0, < 10.4.2
  • splunk enterprise≥ 10.4, < 10.4.2 | ≥ 10.2, < 10.2.6 | ≥ 10.0, < 10.0.9 | ≥ 9.4, < 9.4.14
  • splunk_secure_gateway≥ 3.10, < 3.10.9 | ≥ 3.9, < 3.9.23 | ≥ 3.8, < 3.8.70 | ≥ 3.8.0, < 3.8.70 | ≥ 3.9.0, < 3.9.23 | ≥ 3.10.0, < 3.10.9

1 vendor · 3 products

References

1 links