What’s Vulnerable › Vulnerabilities

CVE-2020-35733

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-15 · updated 2026-06-17
• Weakness: CWE-295

Description

An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.

Affected products

• Erlang OTP: before 23.2.2 — fixed in 23.2.2
• Fedoraproject Fedora: 33

How to fix

Upgrade to a fixed version: Erlang OTP 23.2.2. Check the vendor advisory for mitigations.

References

• https://erlang.org/pipermail/erlang-questions/2021-January/100357.html
• https://github.com/erlang/otp/releases
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4CXZWUOZELT7A5ZN6DJRQHX7L35V4PW/
• https://www.erlang.org/downloads
• https://www.erlang.org/news
• https://erlang.org/pipermail/erlang-questions/2021-January/100357.html
• https://github.com/erlang/otp/releases
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4CXZWUOZELT7A5ZN6DJRQHX7L35V4PW/
• https://www.erlang.org/downloads
• https://www.erlang.org/news

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