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VulnerabilityPublished

CVE-2026-20203: Splunk Enterprise · The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affects Splunk EnterpriseSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium · fixed in 10.2.2 : update Splunk Enterprise when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.2.2, 10.0.5, 9.4.10 +6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
SplunkSplunk EnterpriseAffected
  • >=10.2 <10.2.2
Fixed in
  • 10.2.2
SplunkSplunk EnterpriseAffected
  • >=10.0 <10.0.5
Fixed in
  • 10.0.5
SplunkSplunk EnterpriseAffected
  • >=9.4 <9.4.10
Fixed in
  • 9.4.10
SplunkSplunk EnterpriseAffected
  • >=9.3 <9.3.11
Fixed in
  • 9.3.11
SplunkSplunk Cloud PlatformAffected
  • >=10.3.2512 <10.3.2512.6
  • >=10.2.2510 <10.2.2510.10
  • >=10.1.2507 <10.1.2507.19
  • >=10.0.2503 <10.0.2503.13
  • >=9.3.2411 <9.3.2411.127
  • =10.4.2603
Fixed in
  • 10.3.2512.6
  • 10.2.2510.10
  • 10.1.2507.19
  • 10.0.2503.13
  • 9.3.2411.127

AI-suggested

Since this affects specific versions below certain releases, upgrading to the fixed versions listed by Splunk when available is recommended. Until then, restrict write permissions on apps to trusted users and review role assignments to minimize exposure.

Description

In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles, has write permission on the app, and does not hold the high-privilege capability `accelerate_datamodel`, could turn on or off Data Model Acceleration due to improper access control.

References

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