CVE search · CVE-2026-102479
CVE-2026-102479
high 8.7
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.
Details
- Status
- Modified
- Published
- Last changed
- Source
- emo@eclipse.org
- Weakness
- CWE-444
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 4.0 | high 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
emo@eclipse.orgSecondary |
| CVSS 3.1 | medium 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
nvd@nist.govPrimary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- eclipse · vert.x
References
- https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-ch7p-g5pm-3gqxVendor Advisory
- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/352Issue TrackingThird Party Advisory
- http://www.openwall.com/lists/oss-security/2026/10/28/19