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CVE-2026-55436— Coder's AI Bridge Proxy skips TLS certificate verification in default configuration

Quick assessment

Affected
coder coder
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Coder是Coder组织开源的一个可以在公共或私有云基础设施中设置开发环境的应用程序。 Coder存在加密问题漏洞，该漏洞源于AI Bridge Proxy的默认传输设置将 设置为true，导致当未配置上游代理时，出站HTTPS接受任何TLS证书，可能允许中间人攻击者进行攻击。以下版本受到影响：2.30.0版本至2.32.7之前版本、2.33.0版本至2.33.8之前版本和2.34.0版本至2.34.2之前版本。

CVSS 7.4 · High EPSS 0.26% · P16

Affected Version Matrix 3

VendorProduct Version RangeStatus
coder coder >= 2.34.0, < 2.34.2 affected
>= 2.33.0, < 2.33.8 affected
>= 2.30.0, < 2.32.7 affected
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I. Basic Information for CVE-2026-55436

Vulnerability Information
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Vulnerability Title
Coder's AI Bridge Proxy skips TLS certificate verification in default configuration
Source: CVE Program / CVE List V5
Vulnerability Description
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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Coder 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Coder是Coder组织开源的一个可以在公共或私有云基础设施中设置开发环境的应用程序。 Coder存在加密问题漏洞，该漏洞源于AI Bridge Proxy的默认传输设置将`InsecureSkipVerify`设置为true，导致当未配置上游代理时，出站HTTPS接受任何TLS证书，可能允许中间人攻击者进行攻击。以下版本受到影响：2.30.0版本至2.32.7之前版本、2.33.0版本至2.33.8之前版本和2.34.0版本至2.34.2之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
coder coder >= 2.34.0, < 2.34.2 -

II. Public POCs for CVE-2026-55436

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III. Intelligence Information for CVE-2026-55436

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Patches & Fixes for CVE-2026-55436 (1)

Vendor Advisories for CVE-2026-55436 (1)

Vendor Pages for CVE-2026-55436 (3)

Same Patch Batch · coder · 2026-07-08 · 8 CVEs total

CVE-2026-55429 8.7 HIGH Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled ap
CVE-2026-55431 7.7 HIGH Coder's session token leaked to arbitrary hosts via `coder open app` for external workspac
CVE-2026-55438 5.8 MEDIUM Coder's workspace app CORS origin check can be bypassed via UUID-based subdomain spoofing
CVE-2026-55430 5.8 MEDIUM Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, en
CVE-2026-55437 5.4 MEDIUM Coder vulnerable to stored HTML injection via workspace agent logs in AgentLogLine compone
CVE-2026-55432 5.4 MEDIUM Coder's sub-agent app registration bypasses template port-sharing policy enforcement
CVE-2026-55433 5.4 MEDIUM Coder: Devcontainer recreate endpoint missing write authorization allows read-only roles t

IV. Related Vulnerabilities

Same product: coder
Same vendor: coder
Same weakness: CWE-295

V. Comments for CVE-2026-55436

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