How severe is CVE-2023-52428?

CVE-2023-52428 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 none, and availability high.

Is CVE-2023-52428 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52428?

CVE-2023-52428 affects Connect2id Nimbus Jose+jwt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52428?

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-2023-52428 have an EU (EUVD) identifier?

Yes. CVE-2023-52428 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0644.

When was CVE-2023-52428 published?

CVE-2023-52428 was published on 2024-02-11 and last updated on 2026-06-17.

CVE-2023-52428

CVE-2023-52428 is a high-severity vulnerability in Connect2id Nimbus Jose+jwt 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0644
Weakness: CWE-770
Affected product: Connect2id Nimbus Jose+jwt
Published: 2024-02-11
Last modified: 2026-06-17

Description

In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption) via a large JWE p2c header value (aka iteration count) for the PasswordBasedDecrypter (PBKDF2) component.

Frequently asked questions

What is CVE-2023-52428?: In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption) via a large JWE p2c header value (aka iteration count) for the PasswordBasedDecrypter (PBKDF2) component.
How severe is CVE-2023-52428?: CVE-2023-52428 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 none, and availability high.
Is CVE-2023-52428 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52428?: CVE-2023-52428 affects Connect2id Nimbus Jose+jwt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52428?: 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-2023-52428 have an EU (EUVD) identifier?: Yes. CVE-2023-52428 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0644.
When was CVE-2023-52428 published?: CVE-2023-52428 was published on 2024-02-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:connect2id:nimbus_jose\+jwt:*:*:*:*:*:*:*:*

More vulnerabilities in Connect2id Nimbus Jose+jwt

CVE-2019-17195 — Critical (CVSS 9.8): Connect2id Nimbus JOSE+JWT before v7.9 can throw various uncaught exceptions while parsing a JWT, which could result in…
CVE-2017-12974 — High (CVSS 7.5): Nimbus JOSE+JWT before 4.36 proceeds with ECKey construction without ensuring that the public x and y coordinates are…
CVE-2017-12972 — High (CVSS 7.5): In Nimbus JOSE+JWT before 4.39, there is no integer-overflow check when converting length values from bytes to bits,…
CVE-2017-12973 — Low (CVSS 3.1): Nimbus JOSE+JWT before 4.39 proceeds improperly after detection of an invalid HMAC in authenticated AES-CBC decryption,…

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