Description
In Eclipse Vert.x versions [4.0.0, 4.5.21] and [5.0.0, 5.0.4], when "directory listing" is enabled, file and directory names are inserted into generated HTML without proper escaping in the href, title, and link attributes. An attacker who can create or rename files or directories within a served path can craft filenames containing malicious script or HTML content, leading to stored cross-site scripting (XSS) that executes in the context of users viewing the affected directory listing.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Eclipse Foundation | Vert.x | 4.0.0 – < 4.5.22, 5.0.0 – < 5.0.5 | 4.5.22 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | kafka-strimzi-compat +12 | 0.48.0-r1 | — |
| Wolfi rolling | keycloak-26.4-iamguarded-compat | 26.4.7-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | io.vertx:vertx-web | < 4.5.22 | 4.5.22 | GHSA-45p5-v273-3qqr |
| Maven | io.vertx:vertx-web | >= 5.0.0, < 5.0.5 | 5.0.5 | GHSA-45p5-v273-3qqr |
Advisories 1
- WID-SEC-2026-0019 Red Hat Enterprise Linux (Quarkus): Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 23, 2026