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CVE-2026-45796— Coder vulnerable to unauthenticated SSRF via Azure Instance Identity Endpoint

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存在服务端请求伪造漏洞，该漏洞源于Azure实例身份端点存在未经身份验证的半盲服务端请求伪造问题，攻击者可通过提交特制PKCS#7签名强制服务器向任意内部或外部主机发出HTTP GET请求，服务器不返回目标响应体，但错误消息可揭示目标是否可达及失败类型。

CVSS 6.5 · Medium EPSS 0.43% · P35

Affected Version Matrix 6

VendorProduct Version RangeStatus
coder coder >= 2.33.0-rc.0, < 2.33.3 affected
>= 2.32.0-rc.0, < 2.32.2 affected
>= 2.31.0, < 2.31.12 affected
>= 2.30.0, < 2.30.8 affected
>= 2.29.0, < 2.29.13 affected
< 2.24.5 affected
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I. Basic Information for CVE-2026-45796

Vulnerability Information
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Vulnerability Title
Coder vulnerable to unauthenticated SSRF via Azure Instance Identity Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Coder allows organizations to provision remote development environments via Terraform. Versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 are vulnerable to unauthenticated semi-blind Server-Side Request Forgery (SSRF) via the Azure instance identity endpoint (`POST /api/v2/workspaceagents/azure-instance-identity`). An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a crafted PKCS#7 signature. The server does not return the target's response body, but error messages in the API response reveal whether the target is reachable and what type of failure occurred. Versions 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 patch the issue. As a workaround, if the Azure identity-auth mechanism is not being used then restrict access to the corresponding endpoint (`/api/v2/workspaceagents/azure-instance-identity`) using ingress firewall and/or proxy ACLs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Coder 服务端请求伪造漏洞
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存在服务端请求伪造漏洞，该漏洞源于Azure实例身份端点存在未经身份验证的半盲服务端请求伪造问题，攻击者可通过提交特制PKCS#7签名强制服务器向任意内部或外部主机发出HTTP GET请求，服务器不返回目标响应体，但错误消息可揭示目标是否可达及失败类型。
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 >= 2.33.0-rc.0, < 2.33.3 -

II. Public POCs for CVE-2026-45796

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III. Intelligence Information for CVE-2026-45796

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Patches & Fixes for CVE-2026-45796 (3)

Vendor Advisories for CVE-2026-45796 (1)

Vendor Pages for CVE-2026-45796 (4)

Other References for CVE-2026-45796 (1)

Same Patch Batch · coder · 2026-07-07 · 12 CVEs total

CVE-2026-46354 9.1 CRITICAL Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent tok
CVE-2026-55427 8.3 HIGH Coder vulnerable to SSH config injection via unsanitized server-supplied values in `coder
CVE-2026-55428 8.2 HIGH Coder: Route hijacking through lack of validation of agent-supplied AllowedIPs in tailnet
CVE-2026-44454 8.1 HIGH Coder vulnerable to workspace auto-creation via crafted URL parameters without user consen
CVE-2026-55075 7.4 HIGH Coder vulnerable to OIDC account takeover via email-based user matching and email_verified
CVE-2026-55076 7.4 HIGH Coder's OIDC email_verified type coercion bypass enables account takeover via unverified e
CVE-2026-55077 7.2 HIGH Coder: User-admin role can reset owner account password
CVE-2026-55434 6.5 MEDIUM Coder vulnerable to denial of service via unbounded request body in AI Bridge provider end
CVE-2026-55078 6.5 MEDIUM Coder: Zip upload decompression lacks aggregate size limit, enabling denial of service
CVE-2026-55435 5.4 MEDIUM Suspended Coder users retain access to AI Bridge LLM proxy endpoints
CVE-2026-55079 4.9 MEDIUM Coder's unbounded memory allocation in provisioner file upload allows authenticated denial

IV. Related Vulnerabilities

Same product: coder
Same vendor: coder
Same weakness: CWE-918

V. Comments for CVE-2026-45796

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