CVSS 3.1
4.2 mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:NCVE-2026-115710
Medium (4.2).
Use of Cache Containing Sensitive Information (CWE-524) in Elasticsearch can lead to information disclosure and incorrect search results via specially crafted search requests. For some query types, Elasticsearch can share cached query results between users who have field-level security restrictions and users who do not. A user restricted by field-level security can learn which documents match a value in a field that they cannot read. A restricted user can also cause users with full access to receive incomplete search results. Disclosure is only possible when a user with full access ran the same query on the same shard recently.
Severity
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-03. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-524 Use of Cache Containing Sensitive Information
- Published
- Record from
- the NVD, synced
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Explain CVE-2026-115710 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-115710?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-115710?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-115710 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Elasticsearch | from 8.9.0 through 8.19.23 |
| Elasticsearch | from 9.0.0 through 9.4.8 |
| Elasticsearch | from 9.5.0 through 9.5.5 |
Attack patterns (CAPEC)
- CAPEC-204 Lifting Sensitive Data Embedded in Cache Severity: Medium
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.