CVE-2026-0543

mediumpriority · track · 0EPSS 0.004 · 37 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 6.5 · medium

Is it mine?

20 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.

cvss

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

6.5

010

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

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · security@elastic.coexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/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-770USprimaryCWE-20US

affected products (20)

Products and version ranges known to be affected.

Open Source Kibana <8.19.10all versionscert_bundDE
Open Source Kibana <9.1.10all versionscert_bundDE
Open Source Kibana <9.2.4all versionscert_bundDE
Open Source Kibana< 8.19.10cert_bundDE
Open Source Kibana< 9.1.10cert_bundDE
Open Source Kibana< 9.2.4cert_bundDE
Elastic Kibana≤ 9.0.0 ≤9.1.9enisa_euvdEU
Elastic Kibana≤ 9.2.0 ≤9.2.3enisa_euvdEU
Elastic Kibana≤ 8.0.0 ≤8.19.9enisa_euvdEU
Elastic Kibana≤ 7.0.0 ≤7.17.29enisa_euvdEU
elastic kibana7.0.0 → 7.17.29nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
elastic kibana8.0.0 → 8.19.0nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
elastic kibana9.0.0 → 9.1.10nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
elastic kibana9.2.0 → 9.2.4nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
Bitnami elk< 8.19.10osvUSpkg:bitnami/elk
Bitnami elk9.0.0 → 9.1.10osvUSpkg:bitnami/elk
Bitnami elk9.2.0 → 9.2.4osvUSpkg:bitnami/elk
Bitnami kibana< 8.19.10osvUSpkg:bitnami/kibana
Bitnami kibana9.0.0 → 9.1.10osvUSpkg:bitnami/kibana
Bitnami kibana9.2.0 → 9.2.4osvUSpkg:bitnami/kibana

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0100Kibana: Mehrere SchwachstellenDeutsch2026-01-13csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Kibana ausnutzen, um einen Denial of Service Angriff durchzuführen oder Informationen offenzulegen.
BIT-elk-2026-0543Improper Input Validation in Kibana Email Connector Leading to Excessive Allocation2026-01-16vendor · osvUS
Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.
BIT-kibana-2026-0543Improper Input Validation in Kibana Email Connector Leading to Excessive Allocation2026-01-16vendor · osvUS
Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2026-01-13modified 2026-06-17

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+3264 more

references (4)

External citations — patches, advisories, analysis.

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