Incorrect authorization in Elasticsearch allows data stream changes
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-863.
Summary
Elastic Elasticsearch from 7.17.5 through 7.17.29, from 8.2.2 through 8.19.18, from 9.0.0 through 9.3.7, and from 9.4.0 through 9.4.3 contains incorrect authorization (CWE-863). An authenticated user with sufficient privileges on a single resource can use the Modify Data Streams API to change a data stream they are not authorized to modify. This can inject data into that stream or affect its searchability, but it does not let the attacker read the stream's contents.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Incorrect Authorization (CWE-863) in Elasticsearch can lead to unauthorized data stream modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user with sufficient privileges over a single resource could use the Modify Data Streams API to modify a data stream to which they were not otherwise authorized, potentially injecting data into it or affecting its ability to be searched normally. This issue does not allow an attacker to read the contents of a data stream they do not otherwise have access to.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Elastic | Elasticsearch | 7.17.5 – 7.17.29; 8.2.2 – 8.19.18; 9.0.0 – 9.3.7; 9.4.0 – 9.4.3 | — | No fix listed | CNA |
- Elasticsearch VendorElastic Affected 7.17.5 – 7.17.29; 8.2.2 – 8.19.18; 9.0.0 – 9.3.7; 9.4.0 – 9.4.3 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* | 7.17.5 – 7.17.29; 8.2.2 to before 8.19.19; 9.0.0 to before 9.3.8; 9.4.0 to before 9.4.4 | Vulnerable | Elastic |
- cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* Versions 7.17.5 – 7.17.29; 8.2.2 to before 8.19.19; 9.0.0 to before 9.3.8; 9.4.0 to before 9.4.4 Vulnerable ·Elastic
Remediation
The sources list no fixed version for Elasticsearch. Red Hat lists Red Hat OpenShift AI (RHOAI) as affected with no available plan.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Quay 3
Timeline
- 2026-10-06 Threatist record created from CVE-2026-102407
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-07 Priority changed: MEDIUM → LOW
- 2026-10-07 Alias added: GHSA-5jmx-xm76-wvvg
- 2026-10-07 Affected versions changed · Red Hat
- 2026-10-07 CVSS score added · Red Hat
- 2026-10-09 Affected versions changed · Red Hat
References
More Elasticsearch vulnerabilities
- TI-2015-01295 The Groovy scripting engine in Elasticsearch before 1.3.8 and 1.4.x before 1.4.3 allows… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-02491 The default configuration in Elasticsearch before 1.2 enables dynamic scripting, which… KEVCVSS 3.1HIGH 8.1
- TI-2023-15037 Elasticsearch StackOverflow vulnerability CVSS 3.1HIGH 7.5
- TI-2021-05135 Information disclosure in Elasticsearch CVSS 3.1MEDIUM 6.5
- TI-2021-05136 All versions of Elastic Cloud Enterprise has the Elasticsearch “anonymous” user enabled… CVSS 3.1HIGH 7.5
- TI-2015-04530 Elasticsearch before 1.6.1 allows remote attackers to execute arbitrary code via… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2026-102407 · CVE Program
- CVE-2026-102407 · NVD
- FIRST EPSS
- GHSA-5jmx-xm76-wvvg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-102407 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences