High 8.7Published Jul 27, 2026

CVE-2026-58227TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain

Updated under an hour ago (Oct 27, 2026, 9:00 AM ET)

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Every CVE for Erlang OTP

Exploited in the last 30 days

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.

CVSS: 8.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-674
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: EEF
NVD analysis: Analyzed
Record last updated: Jul 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Erlang OTP erlang:erlang/otp	from 10.2; fixed at 11.7.4, fixed at 11.6.0.4, fixed at 11.2.12.11	CNA record
erlang erlang/otp erlang:erlang/otp	from 23.2 before 27.3.4.15; from 28.0 before 28.5.0.4; from 29.0 before 29.0.4	NVD
erlang erlang/ssl erlang:erlang/ssl	from 10.2 before 11.2.12.11; from 11.3 before 11.6.0.4; from 11.7 before 11.7.4	NVD

References

References

https://github.com/erlang/otp/security/advisories/GHSA-r5jr-mq46-vmhw	vendor-advisory, related
https://cna.erlef.org/cves/CVE-2026-58227.html	related, patch, third-party-advisory
https://osv.dev/vulnerability/EEF-CVE-2026-58227	related, patch, third-party-advisory
https://www.erlang.org/doc/system/versions.html#order-of-versions	x-version-scheme, release-notes
https://github.com/erlang/otp/commit/0307bff2c72b685c6bd952daaac6bd661c247d62	patch
https://github.com/erlang/otp/commit/241d43703989fec4b6bf637beaeb366d92dcc4c2	patch
https://github.com/erlang/otp/commit/7db64720177961e04545681480d691c4be81c54d	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.