CVE-2016-9121

Severity: critical (CVSS 9.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-03-28 · updated 2026-06-17
Weakness: CWE-326

Description

go-jose before 1.0.4 suffers from an invalid curve attack for the ECDH-ES algorithm. When deriving a shared key using ECDH-ES for an encrypted message, go-jose neglected to check that the received public key on a message is on the same curve as the static private key of the receiver, thus making it vulnerable to an invalid curve attack.

Affected products

go-jose: through 1.0.3

References

http://www.openwall.com/lists/oss-security/2016/11/03/1
https://github.com/square/go-jose/commit/c7581939a3656bb65e89d64da0a52364a33d2507
https://hackerone.com/reports/164590
http://www.openwall.com/lists/oss-security/2016/11/03/1
https://github.com/square/go-jose/commit/c7581939a3656bb65e89d64da0a52364a33d2507
https://hackerone.com/reports/164590

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