CVE•Published 2026-10-14•Modified 2026-10-28•0 articles on news•5 live references•NVD data

CVE-2026-102479Eclipse · Vert.x

Vulnerability data via NVD (ingested)

CVSS v3.1

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 82% of all CVEs

Weaknesses (CWE)

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Description

In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP/1.x decoder uses a canonicalization for well known HTTP headers, the canonicalization process interprets well crafted headers as headers of this list, allowing for instance Content-Xength to be interpeted as Content-Length. This can be exploited for request smuggling purpose. The impacted component is io.vertx:vertx-core.

Timeline

Published 2026-10-14

Modified 2026-10-28

External references

NVD MITRE GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-102479

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Eclipse Vert.x"

All exposed Eclipse Vert.x instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Vert.x"

HTTP body or banner mentions "Vert.x" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-102479