CVE-2026-116593 (GCVE-0-2026-116593)
Vulnerability from cvelistv5 – Published: 2026-10-28 16:46 – Updated: 2026-10-28 20:07
VLAI
EPSS
VEX
Title
Apache Kafka: Kafka Connect configuration provider values exposed via validation REST API endpoint
Summary
Apache Kafka Connect has the /connector-plugins/{connector-type}/config/validate endpoint on its REST API to validate connector configurations.
Apache Kafka Connect also support Configuration Providers which enable to hide the values of sensitive configuration and only resolve them at runtime.
An attacker with access to the validate endpoint can use it to resolve and return plaintext values via any of the configuration providers installed on a Connect worker.
Users are recommended to upgrade to version 4.2.2, 4.3.2, 4.4.0 or above, which fix this issue.
Severity
No CVSS data available.
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kafka.apache.org/cve-list | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/1… |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache Kafka |
Affected:
2.4.0 , < 4.2.2
(semver)
Affected: 4.3.0 , < 4.3.2 (semver) |
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-10-28T20:07:01.640Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/10/28/16"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.kafka:connect-runtime",
"packageURL": "pkg:maven/org.apache.kafka/connect-runtime",
"product": "Apache Kafka",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "4.2.2",
"status": "affected",
"version": "2.4.0",
"versionType": "semver"
},
{
"lessThan": "4.3.2",
"status": "affected",
"version": "4.3.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Hyunwoo Kim \u003cimv4bel@gmail.com\u003e"
},
{
"lang": "en",
"type": "reporter",
"value": "Sudhanshu Chauhan \u003csudhanshu@redhuntlabs.com\u003e, RedHunt Labs"
},
{
"lang": "en",
"type": "reporter",
"value": "Bart\u0142omiej Dmitruk \u003cbartek@striga.ai\u003e, Striga"
},
{
"lang": "en",
"type": "reporter",
"value": "Andrew MacPherson \u003candrew@andrewmohawk.com\u003e"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Mickael Maison \u003cmickael.maison@gmail.com\u003e"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Apache Kafka Connect has the /connector-plugins/{connector-type}/config/validate endpoint on its REST API to validate connector configurations.\u003cbr\u003eApache Kafka Connect also support Configuration Providers which enable to hide the values of sensitive configuration and only resolve them at runtime.\u0026nbsp;\u003cbr\u003e\u003cbr\u003eAn attacker with access to the validate endpoint can use it to resolve and return plaintext values via any of the configuration providers installed on a Connect worker.\u003cbr\u003e\u003cbr\u003eUsers are recommended to upgrade to version 4.2.2, 4.3.2, 4.4.0 or above, which fix this issue."
}
],
"value": "Apache Kafka Connect has the /connector-plugins/{connector-type}/config/validate endpoint on its REST API to validate connector configurations.\nApache Kafka Connect also support Configuration Providers which enable to hide the values of sensitive configuration and only resolve them at runtime.\u00a0\n\nAn attacker with access to the validate endpoint can use it to resolve and return plaintext values via any of the configuration providers installed on a Connect worker.\n\nUsers are recommended to upgrade to version 4.2.2, 4.3.2, 4.4.0 or above, which fix this issue."
}
],
"metrics": [
{
"other": {
"content": {
"text": "moderate"
},
"type": "Textual description of severity"
},
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-28T16:46:21.415Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://kafka.apache.org/cve-list"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Apache Kafka: Kafka Connect configuration provider values exposed via validation REST API endpoint",
"x_generator": {
"engine": "Vulnogram 1.0.3"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2026-116593",
"datePublished": "2026-10-28T16:46:21.415Z",
"dateReserved": "2026-10-26T15:15:31.645Z",
"dateUpdated": "2026-10-28T20:07:01.640Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-116593",
"date": "2026-10-29",
"epss": "0.00212",
"percentile": "0.11531"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.kafka:connect-runtime",
"packageURL": "pkg:maven/org.apache.kafka/connect-runtime",
"product": "Apache Kafka",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "4.2.2",
"status": "affected",
"version": "2.4.0",
"versionType": "semver"
},
{
"lessThan": "4.3.2",
"status": "affected",
"version": "4.3.0",
"versionType": "semver"
}
]
}
],
"source": "security@apache.org"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Apache Kafka Connect has the /connector-plugins/{connector-type}/config/validate endpoint on its REST API to validate connector configurations.\nApache Kafka Connect also support Configuration Providers which enable to hide the values of sensitive configuration and only resolve them at runtime.\u00a0\n\nAn attacker with access to the validate endpoint can use it to resolve and return plaintext values via any of the configuration providers installed on a Connect worker.\n\nUsers are recommended to upgrade to version 4.2.2, 4.3.2, 4.4.0 or above, which fix this issue."
}
],
"id": "CVE-2026-116593",
"lastModified": "2026-10-29T15:04:37.187",
"metrics": {},
"published": "2026-10-28T17:18:00.740",
"references": [
{
"source": "security@apache.org",
"url": "https://kafka.apache.org/cve-list"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2026/10/28/16"
}
],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Awaiting Analysis"
}
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.