Threats Tagged 'ghsa-pxh4-856f-4h89'
View all threats tagged with 'ghsa-pxh4-856f-4h89'. Filter and sort to focus on specific types of threats.
Stop chasing alerts. Route them.
Start free, then upgrade once to turn Radar into an automated delivery engine for your security stack.
Custom feeds / Automations: email, Slack, webhooks, SIEM/MISP / API access (baseline limits)
API access activates after upgrading in Console -> Billing.
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.
Filter Threats
Narrow down the results by type, severity, or affected countries
Threats Tagged 'ghsa-pxh4-856f-4h89'
Click on any threat for detailed analysis and mitigation recommendations
PyJWT versions up to 2.13.0 and the current master branch contain a vulnerability where the HMACAlgorithm.from_jwk method accepts an empty HMAC key from a symmetric oct JWK without raising an error. This allows an attacker to forge tokens by exploiting the verification process that uses this empty key, bypassing signature verification when the key is sourced from a JWK with an empty 'k' value. The issue affects verification paths using PyJWK, PyJWKSet, or PyJWKClient. The vulnerability requires no authentication but depends on the verifier trusting a JWKS containing an empty key entry, which can happen due to misconfiguration or unset environment variables. A fix is available. Join the discussion | GCVE Database | 10/22/2026, 15:48:04 UTC Added: 10/22/2026, 17:15:27 UTC |
Showing 1 to 1 of 1 result