A time-sensitive equality check on the JWT signature in the JsonWebToken.validate method in main/scala/authentikat/jwt/JsonWebToken.scala in authentikat-jwt (aka com.jason-goodwin/authentikat-jwt) version 0.4.5 and earlier allows the supplier of a JWT token to guess bit after bit of the signature by repeating validation requests.
{
"unresolved_ranges": [
{
"source": "CPE_RANGE",
"cpes": [
"cpe:2.3:a:authentikat-jwt_project:authentikat-jwt:*:*:*:*:*:*:*:*"
],
"vendor_product": "authentikat-jwt_project:authentikat-jwt",
"extracted_events": [
{
"last_affected": "0.4.5"
}
]
}
]
}