PT-2026-57986 · Eclipse · Vert.X

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-15075

Positive Technologies (AI Summary)

CVSS v4.0

8.2

High

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Eclipse Vert.x versions prior to 4.5.30 Eclipse Vert.x versions prior to 5.1.5

Description The DefaultRedirectHandler in the vertx-core module propagates all request headers during cross-origin HTTP 30x redirects without performing origin comparisons of the scheme, host, or port. While the Content-Length header is stripped, other sensitive headers such as Authorization, Cookie, Proxy-Authorization, and custom headers like X-API-Token are forwarded to the redirect destination. An attacker can exploit this by inducing a request to be redirected to a host under their control, allowing them to capture bearer tokens, basic-auth credentials, session cookies, and API keys.

Recommendations Update to version 4.5.30 or later. Update to version 5.1.5 or later.

Fix

Information Disclosure

Origin Validation Error

Weakness Enumeration

CWE-200

CWE-346

Related Identifiers

CVE-2026-15075

Affected Products

Vert.X

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-15075 · Security Note
• https://twitter.com/infoflowcloud/status/2076981487522468252 · Twitter Post
• https://twitter.com/CVEnew/status/2076980597533098255 · Twitter Post
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/161 · Note