8.3

CVE-2026-20296: splunk Cross-Site Request Forgery (CSRF)

CVSS: 8.3v3.1HighAnalyzed
Published 15-07-2026Last modified 16-07-2026
Open JSON

Vulnerability summary

CVE-2026-20296 is a high (CVSS 8.3) Cross-Site Request Forgery (CSRF) vulnerability in splunk. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.3% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-07-2026
    PublishedVulnerability first disclosed.
  2. 16-07-2026
    Last modifiedVulnerability information updated.

Description

In Splunk Enterprise versions below 10.4.1, 10.2.5, 10.0.8, and 9.4.13, and Splunk Cloud Platform versions below 10.5.2605.0, 10.4.2604.7, 10.3.2512.16, 10.2.2510.18, and 10.1.2507.24, an attacker could trick a user that holds a role with the `list_deployment_server` capability into running arbitrary Search Processing Language (SPL) searches on their behalf as `splunk-system-user`, allowing for access to stored credentials and indexed data.<br><br>The vulnerability is possible because Deployment Server endpoints in Splunk Web do not validate Cross-Site Request Forgery (CSRF) tokens on GET requests, and caller-supplied input is not correctly neutralized before it is placed into an SPL search.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.18%

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, < 9.4.13 | ≥ 10.0.0, < 10.0.8 | ≥ 10.2.0, < 10.2.5 | 10.4.0
  • splunk_cloud_platform≥ 10.5.2605, < 10.5.2605.0 | ≥ 10.1.2507, < 10.1.2507.24 | ≥ 10.2.2510, < 10.2.2510.18 | ≥ 10.3.2512, < 10.3.2512.16 | ≥ 10.4.2604, < 10.4.2604.7
  • splunk enterprise≥ 10.4, < 10.4.1 | ≥ 10.2, < 10.2.5 | ≥ 10.0, < 10.0.8 | ≥ 9.4, < 9.4.13

1 vendor · 3 products

References

1 links