CVE-2026-58227— TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain
Quick assessment
Affected
Erlang OTP
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.
Erlang OTP是瑞典Erlang社区的一套构建分布式系统的中间件平台。 Erlang OTP 23.2版本至29.0.4之前版本、28.5.0.4版本和27.3.4.15版本存在资源管理错误漏洞，该漏洞源于在TLS或DTLS握手重建不完整的对等证书链时未检测循环，导致未经身份验证的远程攻击者可通过发送特制证书链，耗尽内存并导致BEAM节点崩溃。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-58227
Vulnerability Information
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Vulnerability Title
TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain
Source: CVE Program / CVE List V5
Vulnerability Description
The Erlang/OTP ssl application does not detect cycles when reconstructing an incomplete peer certificate chain during a TLS or DTLS handshake. In ssl_certificate:handle_incomplete_chain/5, the received chain is passed to ssl_certificate:build_certificate_chain/5, which walks issuer relationships via ssl_certificate:do_certificate_chain/7 with no cycle detection and no depth limit. When the peer supplies two mutually cross-signed certificates in unordered form (A issues B, B issues A), the issuer lookup alternates between the two certificates and the pair of functions recurses indefinitely, growing the call stack and chain accumulator without bound.
An unauthenticated remote attacker can send a crafted certificate chain in a TLS or DTLS Certificate handshake message to exhaust available memory and crash the BEAM node. Only a TCP connection and a partial handshake are required; no authentication or completed handshake is needed, and both TLS/DTLS servers and clients are affected when processing peer certificate messages.
This issue affects OTP from OTP 23.2 before OTP 29.0.4, OTP 28.5.0.4 and OTP 27.3.4.15, corresponding to ssl from 10.2 before 11.7.4, 11.6.0.4 and 11.2.12.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
Erlang OTP 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Erlang OTP是瑞典Erlang社区的一套构建分布式系统的中间件平台。 Erlang OTP 23.2版本至29.0.4之前版本、28.5.0.4版本和27.3.4.15版本存在资源管理错误漏洞，该漏洞源于在TLS或DTLS握手重建不完整的对等证书链时未检测循环，导致未经身份验证的远程攻击者可通过发送特制证书链，耗尽内存并导致BEAM节点崩溃。
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-2026-58227
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Patches & Fixes for CVE-2026-58227 (3)
Vendor Advisories for CVE-2026-58227 (3)
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🔗 TLS Denial-of-Service using Invalid Cert Chains · Advisory · erlang/otp · GitHub Read full article vendor-advisory related
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Same Patch Batch · Erlang · 2026-07-27 · 8 CVEs total
| CVE-2026-55953 | 9.1 CRITICAL | TLS 1.2 and DTLS client accepts unoffered anonymous cipher suite, bypassing server authent |
| CVE-2026-59251 | 8.7 HIGH | Denial of service via exponential certificate policy tree growth in path validation |
| CVE-2026-59250 | 8.3 HIGH | Megaco flex scanner buffer overflow via oversized property parm name |
| CVE-2026-54890 | 8.2 HIGH | BEAM VM crash via integer underflow in binary_to_term BIT_BINARY_EXT decoding |
| CVE-2026-42792 | 6.3 MEDIUM | epmd permanent DoS via EMFILE on accept(2) in erts |
| CVE-2026-55737 | 5.1 MEDIUM | Heap pointer corruption via signed/unsigned mismatch in LARGE_TUPLE_EXT decoding in erts e |
| CVE-2026-47078 | 4.8 MEDIUM | Relative path traversal in zip:unzip/zip:extract via check_dir_level depth-counter bypass |
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V. Comments for CVE-2026-58227
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