7.5

CVE-2026-58227

TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Erlang ≫ Erlang/otp Version >= 23.2 < 27.3.4.15
Erlang ≫ Erlang/ssl Version >= 10.2 < 11.2.12.11
Erlang ≫ Erlang/ssl Version >= 11.3 < 11.6.0.4
Erlang ≫ Erlang/ssl Version >= 11.7 < 11.7.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.37% 0.296
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6b3ad84c-e1a6-4bf7-a703-f496b71e49db 8.7 0 0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-674 Uncontrolled Recursion

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

https://www.erlang.org/doc/system/versions.html#order-of-versions
Release Notes
https://github.com/erlang/otp/security/advisories/GHSA-r5jr-mq46-vmhw
Vendor Advisory
https://cna.erlef.org/cves/CVE-2026-58227.html
Patch
Third Party Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-58227
Patch
Third Party Advisory
https://github.com/erlang/otp/commit/0307bff2c72b685c6bd952daaac6bd661c247d62
Patch
https://github.com/erlang/otp/commit/241d43703989fec4b6bf637beaeb366d92dcc4c2
Patch
https://github.com/erlang/otp/commit/7db64720177961e04545681480d691c4be81c54d
Patch