CVE-2026-63144 json
Uncontrolled Recursion in Elasticsearch Leading to Denial of Service
published 3mo ago modified 18d ago also BIT-elasticsearch-2026-63144 , EUVD-2026-47583
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers unbounded recursive processing within the Elasticsearch query evaluation component, causing a fatal error that terminates the affected node. In single-node deployments, this results in complete service outage; in multi-node clusters, it causes repeated node restarts and sustained availability degradation.
Patch / fix
- bitnami elasticsearch 8.19.19, 9.3.8, 9.4.4
- elastic elasticsearch 8.19.19, 9.3.8, 9.4.4
- elasticsearch elasticsearch 8.19.19, 9.3.8, 9.4.4
- org.elasticsearch elasticsearch 8.19.19, 9.3.8, 9.4.4
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | elasticsearch | >=8.0.0, <8.19.19 >=9.0.0, <9.3.8 >=9.4.0, <9.4.4 |
8.19.19 9.3.8 9.4.4 |
Affected products
- Elastic Elasticsearch
Classification
- Weakness
-
- CWE-674 Uncontrolled Recursion
References
Sources
- CVE List CVE-2026-63144
- NVD CVE-2026-63144
- OSV BIT-elasticsearch-2026-63144
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.