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CVE-2016-7036

24
FAUCET Score

CVE-2016-7036 describes a critical vulnerability in python-jose versions prior to 1.3.2, where the library fails to use a constant-time comparison for HMAC keys. This flaw allows attackers to potentially gain full control over affected systems, including data confidentiality, integrity, and availability, due to its network-based attack vector and low complexity. Despite its CVSS score of 9.8 (Critical), there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3.1CPE matchmatch criteria
cpe:2.3:a:python-jose_project:python-jose:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.11%
Probability of exploitation in next 30 days
EPSS Percentile
79.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0211 is in the 69th percentile among its peer group of 36,829 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: python-joseFixed in: 1.3.2

Vendor Advisories (1)

pipGHSA-w799-prg3-cx77critical

python-jose failure to use a constant time comparison for HMAC keys

May 17, 2022

References

github.com / mpdavis/python-jose/pull/35/commits/89b46353b9f611e9da38de3d2fedf52331167b93
Issue TrackingPatchThird Party Advisory
github.com / mpdavis/python-jose/releases/tag/1.3.2
Issue TrackingPatchThird Party Advisory
securityfocus.com / bid/95845