CVE-2026-55434— Coder vulnerable to denial of service via unbounded request body in AI Bridge provider endpoints
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-55434
Vulnerability Information
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Vulnerability Title
Coder vulnerable to denial of service via unbounded request body in AI Bridge provider endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.33.0 and prior to versions 2.33.8 and 2.34.2, AI Bridge provider handlers read request bodies with `io.ReadAll` without a maximum size so an authenticated user with AI Bridge access could send an arbitrarily large body and exhaust memory. Exploitation requires authenticated access to the AI Bridge endpoints and the impact is limited to availability (denial of service). Versions 2.33.8 and 2.34.2 patch the issue. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Coder 资源管理错误漏洞
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 2.33.8之前版本和2.34.2之前版本存在资源管理错误漏洞，该漏洞源于AI Bridge provider handlers使用io.ReadAll读取请求体时未设置最大大小，可能导致已认证用户通过发送大量数据耗尽内存，造成拒绝服务。
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
II. Public POCs for CVE-2026-55434
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Patches & Fixes for CVE-2026-55434 (1)
Vendor Advisories for CVE-2026-55434 (1)
Vendor Pages for CVE-2026-55434 (2)
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-2026-45796 | 6.5 MEDIUM | Coder vulnerable to unauthenticated SSRF via Azure Instance Identity Endpoint |
| 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
- CVE-2026-55438
Coder's workspace app CORS origin check can be bypassed via - CVE-2026-55437
Coder vulnerable to stored HTML injection via workspace agen - CVE-2026-55436
Coder's AI Bridge Proxy skips TLS certificate verification i - CVE-2026-55433
Coder: Devcontainer recreate endpoint missing write authoriz - CVE-2026-55432
Coder's sub-agent app registration bypasses template port-sh
Same vendor: coder
- CVE-2026-55438
Coder's workspace app CORS origin check can be bypassed via - CVE-2026-55437
Coder vulnerable to stored HTML injection via workspace agen - CVE-2026-55436
Coder's AI Bridge Proxy skips TLS certificate verification i - CVE-2026-55433
Coder: Devcontainer recreate endpoint missing write authoriz - CVE-2026-55432
Coder's sub-agent app registration bypasses template port-sh
Same weakness: CWE-770
- CVE-2026-72888
Net::OAuth versions before 0.32 for Perl allow memory exhaus - CVE-2026-74788
Scriban before 7.0.0 Denial of Service via string.pad_left/p - CVE-2026-74786
Scriban before 7.0.0 Denial of Service via Unbounded Templat - CVE-2026-74784
Scriban before 7.2.0 Denial of Service via array.insert_at - CVE-2026-73062
Scriban 3.0.0 through 7.2.0 Denial of Service via Array Mult
V. Comments for CVE-2026-55434
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