How severe is CVE-2024-37568?

CVE-2024-37568 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-37568 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-37568?

CVE-2024-37568 affects Authlib. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-37568?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-37568 have an EU (EUVD) identifier?

Yes. CVE-2024-37568 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0018.

When was CVE-2024-37568 published?

CVE-2024-37568 was published on 2024-06-09 and last updated on 2026-06-17.

CVE-2024-37568

CVE-2024-37568 is a high-severity vulnerability in Authlib with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0018
Weakness: CWE-347
Affected product: Authlib
Published: 2024-06-09
Last modified: 2026-06-17

Description

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.)

Frequently asked questions

What is CVE-2024-37568?: 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.)
How severe is CVE-2024-37568?: CVE-2024-37568 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-37568 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-37568?: CVE-2024-37568 affects Authlib. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-37568?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-37568 have an EU (EUVD) identifier?: Yes. CVE-2024-37568 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0018.
When was CVE-2024-37568 published?: CVE-2024-37568 was published on 2024-06-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:authlib:authlib:*:*:*:*:*:*:*:*

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