8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
41.1%
Versions <=8.5.1
of jsonwebtoken
library could be misconfigured so that legacy, insecure key types are used for signature verification. For example, DSA keys could be used with the RS256 algorithm.
You are affected if you are using an algorithm and a key type other than the combinations mentioned below
Key type | algorithm |
---|---|
ec | ES256, ES384, ES512 |
rsa | RS256, RS384, RS512, PS256, PS384, PS512 |
rsa-pss | PS256, PS384, PS512 |
And for Elliptic Curve algorithms:
alg |
Curve |
---|---|
ES256 | prime256v1 |
ES384 | secp384r1 |
ES512 | secp521r1 |
Update to version 9.0.0. This version validates for asymmetric key type and algorithm combinations. Please refer to the above mentioned algorithm / key type combinations for the valid secure configuration. After updating to version 9.0.0, If you still intend to continue with signing or verifying tokens using invalid key type/algorithm value combinations, you’ll need to set the allowInvalidAsymmetricKeyTypes
option to true
in the sign()
and/or verify()
functions.
There will be no impact, if you update to version 9.0.0 and you already use a valid secure combination of key type and algorithm. Otherwise, use the allowInvalidAsymmetricKeyTypes
option to true
in the sign()
and verify()
functions to continue usage of invalid key type/algorithm combination in 9.0.0 for legacy compatibility.
CPE | Name | Operator | Version |
---|---|---|---|
jsonwebtoken | le | 8.5.1 |
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
41.1%