CVE-2026-58227The Erlang/OTP ssl application does not detect cycles when reconstructing an incomplete peer certificate chain during a TLS or DTLS handshake.
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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
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- 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
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
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
- https://cna.erlef.org/cves/CVE-2026-58227.htmlpatch, third-party-advisory
- https://github.com/erlang/otp/commit/0307bff2c72b685c6bd952daaac6bd661c247d62patch
- https://github.com/erlang/otp/commit/241d43703989fec4b6bf637beaeb366d92dcc4c2patch
- https://github.com/erlang/otp/commit/7db64720177961e04545681480d691c4be81c54dpatch
- https://github.com/erlang/otp/security/advisories/GHSA-r5jr-mq46-vmhwvendor-advisory
- https://osv.dev/vulnerability/EEF-CVE-2026-58227patch, third-party-advisory
- https://www.erlang.org/doc/system/versions.html#order-of-versionsrelease-notes
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.