CVE-2026-35656
OpenClaw: Forwarding header spoofing bypasses gateway.trustedProxies origin detection
Description
## Summary When gateway.trustedProxies was configured, spoofed loopback hops in forwarding headers could be accepted as the client origin and weaken downstream auth and rate-limit decisions. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected: < 2026.3.22 - Fixed: >= 2026.3.22 - Latest released tag checked: `v2026.3.23-2` (`630f1479c44f78484dfa21bb407cbe6f171dac87`) - Latest published npm version checked: `2026.3.23-2` ## Fix Commit(s) - `fc2d29ea926f47c428c556e92ec981441228d2a4` ## Release Status The fix shipped in `v2026.3.22` and remains present in `v2026.3.23` and `v2026.3.23-2`. ## Code-Level Confirmation - src/gateway/net.ts now ignores loopback forwarded hops before trusted-proxy client resolution. - That shipped origin fix is the one consumed by canvas auth and gateway auth-rate-limit paths that rely on resolved client identity. OpenClaw thanks @lintsinghua for reporting.
How to fix CVE-2026-35656
To remediate CVE-2026-35656, upgrade the affected package to a fixed version below.
- —upgrade to 2026.3.22 or later
Is CVE-2026-35656 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2026.3.22
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |