CVE-2026-6734 Impact: When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying…
Description
Impact: When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless of the intended destination. This causes cross-origin request routing: credentials and request data intended for origin B are sent to origin A, responses from the wrong origin are trusted, and HTTPS requests may be silently downgraded to HTTP. Impacted users are applications that use Socks5ProxyAgent (directly or via setGlobalDispatcher) and make requests to more than one origin. This was introduced in undici 7.23.0 via PR #4385 and affects all versions through 8.1.0. Patches: Upgrade to undici v7.26.0 or v8.2.0. Workarounds: Use a separate Socks5ProxyAgent instance per origin, or avoid using Socks5ProxyAgent with multiple origins.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| undici 8.2 | earliest → < 8.2.0 | 8.2.0 |
| undici 8.0 | 8.0.0 → < 8.2.0 | 8.2.0 |
| undici 7.26 | earliest → < 7.26.0 | 7.26.0 |
| undici 7.23 | 7.23.0 → < 7.26.0 | 7.26.0 |
| Red Hat Hardened Images 25.9 | earliest → < 25.9.0-1.1.hum1 | 25.9.0-1.1.hum1 |
| Cryostat 4 | Versions not published | |
| OpenShift Pipelines | Versions not published | |
| Red Hat Build of Podman Desktop | Versions not published | |
| Red Hat Developer Hub | Versions not published |
Show the 22 other branches Hide the 22 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat OpenShift AI (RHOAI) | Versions not published | |
| Red Hat OpenShift Container Platform 4 | Versions not published | |
| Red Hat Openshift Data Foundation 4 | Versions not published | |
| Red Hat OpenShift Dev Spaces | Versions not published | |
| Self-service automation portal 2 | Versions not published | |
| Red Hat AMQ Broker 7 | Versions not published | |
| Cluster Observability Operator 1.5.0 1782839494 | earliest → < 1782839494 | 1782839494 |
| Red Hat Enterprise Linux AppStream (v. 10) | Versions not published | |
| Red Hat Enterprise Linux AppStream (v. 9) | Versions not published | |
| Red Hat Developer Hub 1.10 1783448184 | earliest → < 1783448184 | 1783448184 |
| Red Hat OpenShift Dev Spaces 3.29 1785245777 | earliest → < 1785245777 | 1785245777 |
| Red Hat Developer Hub 1.9 1784210921 | earliest → < 1784210921 | 1784210921 |
| Cryostat 4 on RHEL 9 4.2 | earliest → < 4.2.0-13 | 4.2.0-13 |
| Red Hat OpenShift AI 3.4 1787121387 | earliest → < 1787121387 | 1787121387 |
| Red Hat Openshift Data Foundation 4.18 1786706880 | earliest → < 1786706880 | 1786706880 |
| Red Hat Openshift Data Foundation 4.19 1786703143 | earliest → < 1786703143 | 1786703143 |
| Red Hat Openshift Data Foundation 4.2 1786629548 | earliest → < 1786629548 | 1786629548 |
| Red Hat OpenShift AI 2.25 1787801527 | earliest → < 1787801527 | 1787801527 |
| Red Hat Openshift Data Foundation 4.20 1786629548 | earliest → < 1786629548 | 1786629548 |
References
- github.com github.com
- cna.openjsf.org cna.openjsf.org
Timeline
- Published
- Last modified