# CVE-2026-73116: Apache Juneau: REST client forwards credentials to a different origin when following HTTP redirects

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

Insufficiently Protected Credentials vulnerability in Apache Juneau.

The Apache Juneau RestClient followed HTTP redirects while keeping credential headers from the original request, so a server that redirected the client to a different host or port, or from HTTPS to HTTP, could receive headers such as Authorization, Cookie, Proxy-Authorization and X-API-Key.

This issue affects Apache Juneau: through 9.2.0.

Users are recommended to upgrade to version 9.2.1, which fixes the issue. The fix applies to HTTP clients created by the RestClient builder; applications that supply their own HttpClient must disable automatic redirects or strip credential headers on cross-origin redirects themselves.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Apache Software Foundation / Apache Juneau (org.apache.juneau:juneau-rest-client): ≥ 0; < 9.2.1 (affected, semver). Source: CNA: apache
- Apache Software Foundation / Apache Juneau (org.apache.juneau:juneau-rest-common): ≥ 0; < 9.2.1 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 4.0: 10 (critical); 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; source: CNA: apache

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-522

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://lists.apache.org/thread.html/j05q7vw08j48o96tdlzcsd4sozx1lyl6 (CNA: apache; vendor-advisory)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-73116; retrieved 2026-11-05; source updated 2026-11-05

Revision: 693acf39da9e7240aa0a83cff8550fea145f73a9d293291469f3aca549ac732d

Canonical: https://y2.dev/cve/CVE-2026-73116

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