CVE-2026-20257

mediumpriority · track · 0EPSS 0.003 · 22 %ileDEEUNLUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (22nd) EPSS

CVSS 5.7 · medium

Is it mine?

30 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-27

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a classic dashboard that exfiltrates sensitive data from the browser of a higher-privileged user who views it. The exfiltration is possible because classic dashboard panels do not fully validate style attribute values, which can allow for requests to reach external domains outside the configured Trusted Domains List. The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.

cvss

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

5.7

010

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

v3.15.7mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.15.7mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:Nsecondary · psirt@cisco.com USexploitability 2.1 · impact 3.6

v3.15.2mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.7mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:Nsecondary · NCSC-NL NL

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20US

affected products (30)

Products and version ranges known to be affected.

Splunk Splunk Enterprise <10.0.7all versionscert_bundDE
Splunk Splunk Enterprise <10.2.4all versionscert_bundDE
Splunk Splunk Enterprise <10.4.0all versionscert_bundDE
Splunk Splunk Enterprise <9.3.13all versionscert_bundDE
Splunk Splunk Enterprise <9.4.12all versionscert_bundDE
Splunk Splunk Enterprise< 10.0.7cert_bundDE
Splunk Splunk Enterprise< 10.2.4cert_bundDE
Splunk Splunk Enterprise< 10.4.0cert_bundDE
Splunk Splunk Enterprise< 9.3.13cert_bundDE
Splunk Splunk Enterprise< 9.4.12cert_bundDE
Splunk Splunk Cloud Platform10.1.2507 → 10.1.2507.23enisa_euvdEU
Splunk Splunk Cloud Platform10.2.2510 → 10.2.2510.15enisa_euvdEU
Splunk Splunk Cloud Platform10.3.2512 → 10.3.2512.13enisa_euvdEU
Splunk Splunk Cloud Platform9.3.2411 → 9.3.2411.132enisa_euvdEU
Splunk Splunk Enterprise10.0 → 10.0.7enisa_euvdEU
Splunk Splunk Enterprise10.2 → 10.2.4enisa_euvdEU
Splunk Splunk Enterprise9.3 → 9.3.13enisa_euvdEU
Splunk Splunk Enterprise9.4 → 9.4.12enisa_euvdEU
Splunk Splunk Cloud Platform≤ vers:unknown/*ncsc_nlNL
Splunk Splunk Enterprise≤ vers:unknown/*ncsc_nlNL

showing 20 of 30

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0198Kwetsbaarheden verholpen in Splunk Enterprise en Splunk Cloud PlatformNL2026-06-15csaf · ncsc_nlNL
Splunk heeft meerdere kwetsbaarheden verholpen in Splunk Enterprise en Splunk Cloud Platform.
WID-SEC-W-2026-1877Splunk Enterprise: Mehrere SchwachstellenDeutsch2026-06-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder vertrauliche Informationen offenzulegen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund ncsc_nl NVD CVE.org MITRE

published 2026-06-10modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan