CVE-2026-20166

mediumpriority · track · 0EPSS 0.002 · 5 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.16% (5th) EPSS

CVSS 5.4 · medium

Is it mine?

23 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

In Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12, a low-privileged user that does not hold the "admin" or "power" Splunk roles could retrieve the Observability Cloud API access token through the Discover Splunk Observability Cloud app due to improper access control. This vulnerability does not affect Splunk Enterprise versions below 9.4.9 and 9.3.10 because the Discover Splunk Observability Cloud app does not come with Splunk Enterprise.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 2.5

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-200US

affected products (23)

Products and version ranges known to be affected.

Splunk Splunk Enterprise <10.0.3all versionscert_bundDE
Splunk Splunk Enterprise <10.0.4all versionscert_bundDE
Splunk Splunk Enterprise <10.2.0all versionscert_bundDE
Splunk Splunk Enterprise <10.2.1all versionscert_bundDE
Splunk Splunk Enterprise< 10.0.3cert_bundDE
Splunk Splunk Enterprise< 10.0.4cert_bundDE
Splunk Splunk Enterprise< 10.2.0cert_bundDE
Splunk Splunk Enterprise< 10.2.1cert_bundDE
Splunk Splunk Cloud Platform10.0.2503 → 10.0.2503.12enisa_euvdEU
Splunk Splunk Cloud Platform10.1.2507 → 10.1.2507.16enisa_euvdEU
Splunk Splunk Cloud Platform10.2.2510 → 10.2.2510.5enisa_euvdEU
Splunk Splunk Enterprise10.0 → 10.0.4enisa_euvdEU
Splunk Splunk Enterprise10.2 → 10.2.1enisa_euvdEU
Splunk Inc. Splunk Cloud Platform≤ 10.0.2503.12fstec_bduRU
Splunk Inc. Splunk Cloud Platform≤ 10.1.2507.16fstec_bduRU
Splunk Inc. Splunk Cloud Platform≤ 10.2.2510.5fstec_bduRU
Splunk Inc. Splunk Enterprise≤ 10.2.0fstec_bduRU
Splunk Inc. Splunk Enterprise10.0.0 → 10.0.3fstec_bduRU
splunk splunk10.0.0 → 10.0.4nvdUScpe:2.3:a:splunk:splunk:*:*:*:*:*:*:*:*
splunk splunk= 10.2.0nvdUScpe:2.3:a:splunk:splunk:*:*:*:*:*:*:*:*

showing 20 of 23

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0696Splunk Splunk Enterprise: Mehrere SchwachstellenDeutsch2026-03-11csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um Cross-Site-Scripting-Angriffe durchzuführen, beliebigen Code auszuführen oder vertrauliche Informationen offenzulegen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2026-03-11modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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