CVE-2026-72686

mediumpriority · track · 0EPSS 0.006 · 47 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.57% (47th) EPSS

CVSS 6.5 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single request containing a crafted user-supplied input. A specific internal component validates the input using a recursive routine and applies no bound to the length of the value being validated, so the validation causes the thread to exhaust its stack. The resulting fatal error is not handled by the surrounding execution paths and terminates the affected node process, producing a denial of service.

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-674US

affected products (15)

Products and version ranges known to be affected.

Open Source Elasticsearch <8.19.20all versionscert_bundDE
Open Source Elasticsearch <9.4.5all versionscert_bundDE
Open Source Elasticsearch <9.5.1all versionscert_bundDE
Open Source Elasticsearch< 8.19.20cert_bundDE
Open Source Elasticsearch< 9.4.5cert_bundDE
Open Source Elasticsearch< 9.5.1cert_bundDE
Elastic Elasticsearch≤ 8.0.0 ≤8.19.19enisa_euvdEU
Elastic Elasticsearch≤ 9.0.0 ≤9.4.4enisa_euvdEU
Elastic Elasticsearch≤ 9.5.0enisa_euvdEU
elastic elasticsearch8.0.0 → 8.19.20nvdUScpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
elastic elasticsearch9.0.0 → 9.4.5nvdUScpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
elastic elasticsearch9.5.0 → 9.5.1nvdUScpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
Bitnami elasticsearch8.0.0 → 8.19.20osvUSpkg:bitnami/elasticsearch
Bitnami elasticsearch9.0.0 → 9.4.5osvUSpkg:bitnami/elasticsearch
Bitnami elasticsearch9.5.0 → 9.5.1osvUSpkg:bitnami/elasticsearch

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2841Elasticsearch: Mehrere SchwachstellenDeutsch2026-08-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Elasticsearch ausnutzen, um beliebigen Programmcode auszuführen, und um einen Denial of Service Angriff durchzuführen.
BIT-elasticsearch-2026-72686Uncontrolled Recursion in Elasticsearch Leading to Denial of Service2026-08-19vendor · osvUS
A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single request containing a crafted user-supplied input. A specific internal component validates the input using a recursive routine and applies no bound to the length of the value being validated, so the validation causes the thread to exhaust its stack. The resulting fatal error is not handled by the surrounding execution paths and terminates the affected node process, producing a denial of service.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2026-08-13modified 2026-09-01

references (4)

External citations — patches, advisories, analysis.

scry

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