Path traversal in Eclipse Vert.x
Priority MEDIUM 46CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.
Summary
In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the StaticHandler uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\' (forward slashes) sequences that can resolve to a location that is outside of that directory when running on Windows Operating Systems.
Why it matters now
EPSS 0.02224 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed io.vertx:vertx-web (Maven): 3.5.4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Eclipse Vert.x | 3.0 and later; up to 3.5.3 | — | No fix listed | CNA |
| — | io.vertx:vertx-web (Maven) | 3.0.0 to before 3.5.4 | 3.5.4 | Patch available | GHSA-h39x-m55c-v55h |
- Eclipse Vert.x VendorEclipse Foundation Affected 3.0 and later; up to 3.5.3 Fixed in — No fix listed CNA
- io.vertx:vertx-web (Maven) Vendor— Affected 3.0.0 to before 3.5.4 Fixed in 3.5.4 Patch available GHSA-h39x-m55c-v55h
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:* | 3.0.0 – 3.5.3 | Vulnerable | Eclipse Foundation |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:* Versions 3.0.0 – 3.5.3 Vulnerable ·Eclipse Foundation
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
- Fix · GHSA-h39x-m55c-v55h io.vertx:vertx-web (Maven) Fixed in 3.5.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12542
- 2026-10-03 Alias added: GHSA-h39x-m55c-v55h
References
Advisory 3
Other 4
- [pulsar-commits] 20201215 [GitHub] [pulsar] yanshuchong opened a new issue #8967: CVSS issue list
- https://github.com/vert-x3/vertx-web/commit/57a65dce6f4c5aa5e3ce7288685e7f3447eb8f3b
- https://github.com/vert-x3/vertx-web
- https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26@%3Ccommits.pulsar.apache.org%3E
More Eclipse Foundation Vert.x vulnerabilities
- TI-2026-06017 Improper certificate validation in Eclipse Vert.x CVSS 4.0MEDIUM 6.9
- TI-2025-10971 In Eclipse Vert.x versions [4.0.0, 4.5.21] and [5.0.0, 5.0.4], a StaticHandler… CVSS 4.0MEDIUM 6.3
- TI-2019-13165 Path traversal in Eclipse Vert.x CVSS 3.1CRITICAL 9.8
- TI-2018-09003 XML external entity injection in Eclipse Vert.x CVSS 3.0CRITICAL 9.8
- TI-2025-10972 Cross-site scripting in Eclipse Foundation Vert.x CVSS 4.0LOW 2.3
- TI-2026-74673 Compression bomb in Eclipse Vert.x gRPC server CVSS 4.0HIGH 8.7
Sources
- CVE-2018-12542 · CVE Program
- CVE-2018-12542 · NVD
- FIRST EPSS
- GHSA-h39x-m55c-v55h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences