CVE-2026-72684 json
Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service
published 2mo ago modified 2mo ago also BIT-elasticsearch-2026-72684 , EUVD-2026-58248
- 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
A flaw in Elasticsearch allows an authenticated user holding only read privileges to submit a small search request containing a crafted user-supplied input. Processing that input causes a specific internal component to allocate memory without any upper bound, and the allocation occurs outside the scope of the existing memory accounting controls that were intended to constrain it. The resulting out-of-memory condition is fatal and terminates the affected node process, causing a denial of service.
Patch / fix
- bitnami elasticsearch 8.19.21, 9.4.6
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo 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, <8.19.21 >=9.0.0, <9.4.6 |
8.19.21 9.4.6 |
Affected products
- Elastic Elasticsearch
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
discuss.elastic.co
/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-76/389508
vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-72684
web
Sources
- CVE List CVE-2026-72684
- NVD CVE-2026-72684
- OSV BIT-elasticsearch-2026-72684
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.