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Vulnerability record · CVE-2016-9121 · published 28 March 2017

CVE-2016-9121: Go-jose project go-jose inadequate encryption strength vulnerability

GGo Jose Project · Go Jose

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.

9.1 CVSS 3.0 Critical EPSS 1.4% · top 28.4% CWE-326 · Inadequate encryption strength
9.1CVSS 3.0 base score, v2 6.4
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2016/11/03/1 Mailing ListPatchThird Party Advisory
https://github.com/square/go-jose/commit/c7581939a3656bb65e89d64da0a52364a33d2507 Issue TrackingPatchThird Party Advisory
https://hackerone.com/reports/164590 Permissions Required
http://www.openwall.com/lists/oss-security/2016/11/03/1 Mailing ListPatchThird Party Advisory
https://github.com/square/go-jose/commit/c7581939a3656bb65e89d64da0a52364a33d2507 Issue TrackingPatchThird Party Advisory
https://hackerone.com/reports/164590 Permissions Required

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-9121), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.