Elastic Elasticsearch up to 8.19.23/9.4.8/9.5.5 Cache cache containing sensitive information

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9$0-$5k0.37

Summaryinfo

A vulnerability has been found in Elastic Elasticsearch up to 8.19.23/9.4.8/9.5.5 and classified as critical. Affected by this issue is some unknown functionality of the component Cache. The manipulation leads to use of cache containing sensitive information. This vulnerability is referenced as CVE-2026-115710. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Elastic Elasticsearch up to 8.19.23/9.4.8/9.5.5 and classified as critical. This issue affects an unknown part of the component Cache. The manipulation with an unknown input leads to a use of cache containing sensitive information vulnerability. Using CWE to declare the problem leads to CWE-524. The code uses a cache that contains sensitive information, but the cache can be read by an actor outside of the intended control sphere. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at discuss.elastic.co. The identification of this vulnerability is CVE-2026-115710 since 10/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/03/2026). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.2
CNA Vector (elastic): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use of cache containing sensitive information
CWE: CWE-524
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/23/2026 CVE reserved
11/03/2026 +11 days Advisory disclosed
11/03/2026 +0 days VulDB entry created
11/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: discuss.elastic.co
Status: Confirmed

CNA: elastic
CVE: CVE-2026-115710 (🔒)

GCVE (CVE): GCVE-0-2026-115710
GCVE (VulDB): GCVE-100-430475

Entryinfo

Created: 11/03/2026 18:12
Changes: 11/03/2026 18:12 (61)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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