October 11, 2026

CVE Watchtower

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CVE-2026-20239NVD

Vulnerability Summary

In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.
Severity Level
HIGH(7.5)
Published Date
May 20, 2026
Last Modified
Jul 23, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.49%Probability
Root Weakness (CWE)
CWE-532: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 7.5 (HIGH)
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Splunk Splunk >= 10.0.0 and < 10.0.5
  • Splunk Splunk >= 10.2.0 and < 10.2.2
  • Splunk Splunk Cloud Platform >= 10.0.2503 and < 10.0.2503.13
  • Splunk Splunk Cloud Platform >= 10.1.2507 and < 10.1.2507.21
  • Splunk Splunk Cloud Platform >= 10.2.2510 and < 10.2.2510.11
  • Splunk Splunk Cloud Platform >= 10.3.2512 and < 10.3.2512.8
Patched Versions
  • Splunk Splunk 10.0.5
  • Splunk Splunk 10.2.2
  • Splunk Splunk Cloud Platform 10.0.2503.13
  • Splunk Splunk Cloud Platform 10.1.2507.21
  • Splunk Splunk Cloud Platform 10.2.2510.11
  • Splunk Splunk Cloud Platform 10.3.2512.8
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References