Authlib up to 1.3.0 Asymmetric Public Key jwt.decode signature verification

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Authlib up to 1.3.0. This affects the function jwt.decode of the component Asymmetric Public Key Handler. Performing a manipulation results in an unknown weakness. This vulnerability is identified as CVE-2024-37568. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Authlib up to 1.3.0. It has been classified as problematic. This affects the function jwt.decode of the component Asymmetric Public Key Handler. CWE is classifying the issue as CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. The impact remains unknown. The summary by CVE is:

lepture Authlib before 1.3.1 has algorithm confusion with asymmetric public keys. Unless an algorithm is specified in a jwt.decode call, HMAC verification is allowed with any asymmetric public key. (This is similar to CVE-2022-29217 and CVE-2024-33663.)

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2024-37568. The exploitability is told to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 271941 (Debian dla-4352 : python-authlib-doc - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.3.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (271941). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Authlib

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 271941
Nessus Name: Debian dla-4352 : python-authlib-doc - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Authlib 1.3.1

Timelineinfo

06/09/2024 🔍
06/09/2024 +0 days 🔍
10/30/2025 +508 days 🔍

Sourcesinfo

Advisory: 654
Status: Confirmed

CVE: CVE-2024-37568 (🔍)
GCVE (CVE): GCVE-0-2024-37568
GCVE (VulDB): GCVE-100-267621

Entryinfo

Created: 06/09/2024 21:25
Updated: 10/30/2025 13:40
Changes: 06/09/2024 21:25 (52), 06/13/2024 03:42 (13), 08/15/2024 19:26 (12), 10/30/2025 13:40 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.