CVE-2026-55436
published 2026-07-08CVE-2026-55436: Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.30.0 and prior to versions 2.32.7, 2.33.8, and…
PriorityP347high7.4CVSS 3.1
AVNACHPRNUINSUCHIHAN
EPSS
0.26%
17.8th percentile
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.30.0 and prior to versions 2.32.7, 2.33.8, and 2.34.2, the AI Bridge Proxy (`aibridgeproxyd`) created a goproxy server whose default transport set `InsecureSkipVerify: true` and only assigned a secure transport when an upstream proxy was configured. In the default configuration (no upstream proxy), outbound HTTPS to the Coder access URL accepted any TLS certificate. Practical exploitation requires an on-path (man-in-the-middle) position between the AI Bridge Proxy and the Coder server. Deployments where they are co-located over loopback are effectively unaffected. The fix in versions 2.32.7, 2.33.8, and 2.34.2 applies the secure transport (TLS 1.2 or higher using system root CAs) unconditionally. As a workaround, ensure the Coder access URL uses a trusted certificate and secure the network path between the AI Bridge Proxy and the Coder server (for example, loopback or mTLS).
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| coder | coder | — | — |
| coder | coder | — | — |
| coder | coder | — | — |
| coder | coder | >= 2.30.0 < 2.32.7 | 2.32.7 |
| coder | coder | >= 2.33.0 < 2.33.8 | 2.33.8 |
| coder | coder | >= 2.34.0 < 2.34.2 | 2.34.2 |
| github.com | coder_coder_v2 | >= 2.30.0 < 2.32.7 | 2.32.7 |
| github.com | coder_coder_v2 | >= 2.33.0 < 2.33.8 | 2.33.8 |
| github.com | coder_coder_v2 | >= 2.34.0 < 2.34.2 | 2.34.2 |
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VulDB
Coder up to 2.32.6/2.33.7/2.34.1 AI Bridge Proxy certificate validation
vuldb·2026-07-08·CVSS 7.4
CVE-2026-55436 [HIGH] Coder up to 2.32.6/2.33.7/2.34.1 AI Bridge Proxy certificate validation
A vulnerability, which was classified as problematic, has been found in Coder up to 2.32.6/2.33.7/2.34.1. This affects an unknown part of the component AI Bridge Proxy. This manipulation causes improper certificate validation.
This vulnerability is handled as CVE-2026-55436. The attack can be initiated remotely. There is not any exploit available.
GHSA
Coder's AI Bridge Proxy skips TLS certificate verification in default configuration
ghsa·2026-07-06
CVE-2026-55436 [HIGH] CWE-295 Coder's AI Bridge Proxy skips TLS certificate verification in default configuration
Coder's AI Bridge Proxy skips TLS certificate verification in default configuration
### Summary
The AI Bridge Proxy (`aibridgeproxyd`) created a goproxy server whose default transport set `InsecureSkipVerify: true` and only assigned a secure transport when an upstream proxy was configured. In the default configuration (no upstream proxy), outbound HTTPS to the Coder access URL accepted any TLS certificate.
> **Note:** Practical exploitation requires an on-path (man-in-the-middle) position between the AI Bridge Proxy and the Coder server. Deployments where they are co-located over loopback are effectively unaffected.
### Impact
An attacker positioned between the proxy and the Coder server, via ARP spoofing, DNS poisoning or control of proxy environment variables, could intercept inject
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-07-08
Published