CVE-2026-102466
- Source
- https://cve.org/CVERecord?id=CVE-2026-102466
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102466.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-102466
- Aliases
-
- GHSA-9jxp-x3fr-ffqh
- Published
- 2026-10-15T08:15:32Z
- Modified
- 2026-10-28T02:30:43Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- [none]
- Details
-
In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x MySQL client (vertx-mysql-client) pre-allocates an array for column definitions based on a server-declared column count with no upper-bound validation. A malicious or compromised MySQL server, or an attacker with man-in-the-middle positioning, can send a crafted result set packet with an extremely large column count, causing the client to attempt a massive heap allocation. The resulting OutOfMemoryError crashes the Netty event loop thread, causing a complete denial of service for all connections and verticles in the Vert.x application.
The impacted component is io.vertx:vertx-mysql-client.
- Database specific
{ "cna_assigner": "eclipse", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102466.json" }- References
Affected packages
Git / github.com/eclipse-vertx/vert.x
Affected ranges
- Type
- GIT
- Repo
- https://github.com/eclipse-vertx/vert.x
- Events
-
IntroducedFixedIntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*", "range": [ { "introduced": "4.5.0" }, { "fixed": "4.5.35" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*", "range": [ { "introduced": "5.0.0" }, { "fixed": "5.1.10" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*", "range": [ { "introduced": "5.2.0" }, { "last_affected": "5.2.0" } ], "source": "CPE_STRING" } ] }
- Type
- GIT
- Repo
- https://github.com/eclipse-vertx/vertx-sql-client
- Events
-
IntroducedFixedIntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*", "range": [ { "introduced": "4.5.0" }, { "fixed": "4.5.35" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*", "range": [ { "introduced": "5.0.0" }, { "fixed": "5.1.10" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*", "range": [ { "introduced": "5.2.0" }, { "last_affected": "5.2.0" } ], "source": "CPE_STRING" } ] }
- Type
- GIT
- Repo
- https://github.com/vert-x3/vertx-web
- Events
-
IntroducedFixedIntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*", "range": [ { "introduced": "4.5.0" }, { "fixed": "4.5.35" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*", "range": [ { "introduced": "5.0.0" }, { "fixed": "5.1.10" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*", "range": [ { "introduced": "5.2.0" }, { "last_affected": "5.2.0" } ], "source": "CPE_STRING" } ] }
Affected versions
4.*
4.5.0
4.5.1
4.5.10
4.5.11
4.5.12
4.5.13
4.5.14
4.5.15
4.5.16
4.5.17
4.5.18
4.5.19
4.5.2
4.5.20
4.5.21
4.5.22
4.5.23
4.5.24
4.5.25
4.5.26
4.5.27
4.5.28
4.5.29
4.5.3
4.5.30
4.5.31
4.5.32
4.5.33
4.5.34
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
5.*
5.0.0
5.1.0
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.2.0