UpHeron
All vulnerabilities

Servers and applications

CVE-2021-31559

A crafted request bypasses S2S TCP Token authentication writing arbitrary events to an index in Splunk Enterprise Indexer 8.1 versions before 8.1.5 and 8.2 versions before 8.2.1. The vulnerability impacts Indexers configured to use TCPTokens. It does not impact Universal Forwarders.

Severity
High 7.5
Published
6 May 2022
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.1.5
Sources
NVD

Affected software

SoftwareAffected versions
Splunk EnterpriseServers and applications · cpe:a:splunk:splunk
  • From 8.1.0 before 8.1.5
  • Version 8.2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-31559
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-31559