PT-2026-42212 · Splunk · Splunk Cloud Platform+2

Charlie Huggard · Published 2026-05-20 · Updated 2026-05-26 · CVE-2026-20239

Mitre

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Insertion into Log File

Weakness Enumeration

CWE-532

Related Identifiers

CVE-2026-20239

Affected Products

Splunk Cloud Platform

Splunk Enterprise

Splunk

References · 5

• https://advisory.splunk.com/advisories/SVD-2026-0503 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20239 · Security Note
• https://twitter.com/CCBalert/status/2059278641356284358 · Twitter Post
• https://reddit.com/r/CVEWatch/comments/1to2dti/top_10_trending_cves_26052026 · Reddit Post
• https://reddit.com/r/CVEWatch/comments/1tn4o94/top_10_trending_cves_25052026 · Reddit Post