← Vulnerability feed

Vulnerability record · CVE-2017-12974 · published 20 August 2017

CVE-2017-12974: Connect2id nimbus jose\+jwt improper verification of cryptographic signature vulnerability

Connect2id · Nimbus Jose\+Jwt

Nimbus JOSE+JWT before 4.36 proceeds with ECKey construction without ensuring that the public x and y coordinates are on the specified curve, which allows attackers to conduct an Invalid Curve Attack in environments where the JCE provider lacks the applicable curve validation.

7.5 CVSS 3.0 High EPSS 1.3% · top 31.1% CWE-347 · Improper verification of cryptographic signature
7.5CVSS 3.0 base score, v2 5.0
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Nimbus JOSE+JWT before 4.36 proceeds with ECKey construction without ensuring that the public x and y coordinates are on the specified curve, which allows attackers to conduct an Invalid Curve Attack in environments where the JCE provider lacks the applicable curve validation.

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

Affected products

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

References

LinkTags
https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/f3a7a801f0c6b078899fed9226368eb7b44e2b2f Third Party Advisory
https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/217/explicit-check-for-ec-public-key-on-curve PatchThird Party Advisory
https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt Release NotesThird Party Advisory
https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.
https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/f3a7a801f0c6b078899fed9226368eb7b44e2b2f Third Party Advisory
https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/217/explicit-check-for-ec-public-key-on-curve PatchThird Party Advisory
https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt Release NotesThird Party Advisory
https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.

Track CVE-2017-12974 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2019-17195Connect2id nimbus jose\+jwt vulnerabilityConnect2id Nimbus JOSE+JWT before v7.9 can throw various uncaught exceptions while parsing a JWT, which could result in an application crash (potenti…EPSS 11%7.5CVE-2023-52428Connect2id nimbus jose\+jwt allocation without limits vulnerabilityIn Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption) via a large JWE p2c header value (aka i…EPSS 0.81%7.5CVE-2017-12972Connect2id nimbus jose\+jwt insufficient verification of data authenticity vulnerabilityIn Nimbus JOSE+JWT before 4.39, there is no integer-overflow check when converting length values from bytes to bits, which allows attackers to conduc…EPSS 0.89%3.1CVE-2017-12973Connect2id nimbus jose\+jwt vulnerabilityNimbus JOSE+JWT before 4.39 proceeds improperly after detection of an invalid HMAC in authenticated AES-CBC decryption, which allows attackers to con…EPSS 0.64%10.0CVE-2026-5430Wso2 api control plane improper verification of cryptographic signature vulnerabilityThe JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker t…KEVEPSS 0.59%9.5CVE-2026-48558SimpleHelp OIDC authentication bypass via unverified token signatureSimpleHelp 5.5.15 and earlier and 6.0 pre-release versions accept OIDC identity tokens without verifying their cryptographic signature. When OIDC is …KEVEPSS 5.7%analysed9.8CVE-2025-59718Fortinet FortiOS/FortiProxy SAML signature check bypass in FortiCloud SSOFortiOS, FortiProxy and FortiSwitchManager fail to properly verify the cryptographic signature of SAML responses used for FortiCloud SSO login. An un…KEVEPSS 68%analysed4.6CVE-2025-47827IGEL OS Secure Boot bypass via improper signature verificationIGEL OS before version 11 fails to properly verify a cryptographic signature in the igel-flash-driver module, allowing Secure Boot to be bypassed. A …KEVEPSS 4.9%analysed

Source: NIST National Vulnerability Database (record CVE-2017-12974), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.