CVE-2026-67435CWE-200CWE-918

linuxfabrik-lib: fetch() forwards credential headers across a cross-origin redirect

Medium · published July 29, 2026

CVSS v4.0
6.0
EPSS
0%
Percentile
41.8
In the wild
Unconfirmed
What it is

linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0.

The record
Technical detail
CVSS v4.0
6.0 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00497 · 41.8th percentile
Weaknesses
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor; CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-07-29T19:39Z
EPSS history
Timeline
  • 29 JUL 19:39Z
    linuxfabrik-lib: fetch() forwards credential headers across a cross-origin redirect
    cvelistv5