CVE-2020-12872

5.5 mediumEPSS 0.4%

Medium (5.5) in yaws yaws. EPSS 0.4% chance of exploitation in the next 30 days.

yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0.

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
CWE: CWE-326
Published: 2020-05-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

yaws:yaws

References

https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075
https://github.com/erlyaws/yaws/issues/402
https://github.com/erlyaws/yaws/releases
https://medium.com/%40charlielabs101/cve-2020-12872-df315411aa70
https://sweet32.info/

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