8.7

CVE-2026-58227: erlang erlang\/otp Uncontrolled Recursion

CVSS: 8.7v4.0HighAnalyzed
AliasesUBUNTU-CVE-2026-58227DEBIAN-CVE-2026-58227
Published 27-07-2026Last modified 28-07-2026
Open JSON

Vulnerability summary

CVE-2026-58227 is a high (CVSS 8.7) Uncontrolled Recursion vulnerability in erlang erlang\/otp. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.7/10
010
High · v4.0 (CVE.org)
EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
OPENSUSE-SU-2026:11559-1OPENSUSE-SU-2026:11560-1SUSE-SU-2026:3579-1SUSE-SU-2026:3645-1USN-8827-1

Timeline

  1. 27-07-2026
    PublishedVulnerability first disclosed.
  2. 28-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

0.00 pp

From 0.39% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Erlang3 products
  • erlang\/otp≥ 23.2, < 27.3.4.15 | ≥ 28.0, < 28.5.0.4 | ≥ 29.0, < 29.0.4
  • erlang\/ssl≥ 10.2, < 11.2.12.11 | ≥ 11.3, < 11.6.0.4 | ≥ 11.7, < 11.7.4
  • otp≥ 10.2 (No fix recorded) | ≥ 23.2 (No fix recorded) | ≥ addc42df113f8f15fc20e9dff45490b3ce0d3d6b (No fix recorded)
Debian1 product
  • erlangAll versions (No fix recorded) | < 1:27.3.4.1+dfsg-1+deb13u3 | < 1:29.0.4+dfsg-1
Ubuntu1 product
  • erlang< 1:24.2.1+dfsg-1ubuntu0.7 | < 1:25.3.2.8+dfsg-1ubuntu4.7 | < 1:27.3.4.6+dfsg-1ubuntu0.1

3 vendors · 5 products

References

12 links
Show all 12 references