Vulnerability · Published Nov 5, 2026 · Assigned by apache
CVE-2026-73100Apache Juneau: Sensitive request headers logged in cleartext by the default request logger on server errors
Critical 10.0
In plain English
A critical-severity sensitive data in logs in Apache Juneau from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
Official description
Insertion of Sensitive Information into Log File vulnerability in Apache Juneau. The default REST server call logger records request headers for requests that end in a server error, without redacting them. Any client able to cause a server error gets headers such as Authorization, Cookie, Proxy-Authorization and X-API-Key written in cleartext to the application log, exposing them to anyone who can read the logs. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Juneau | 0 – before 9.2.1 |
| Apache Software Foundation | Apache Juneau | 0 – before 9.2.1 |
Weakness: CWE-532 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H