How severe is CVE-2023-31580?

CVE-2023-31580 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-31580 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31580?

CVE-2023-31580 affects Networknt Light-oauth2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31580?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-31580 published?

CVE-2023-31580 was published on 2023-10-25 and last updated on 2026-06-17.

CVE-2023-31580

CVE-2023-31580 is a medium-severity vulnerability in Networknt Light-oauth2 with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Networknt Light-oauth2
Published: 2023-10-25
Last modified: 2026-06-17

Description

light-oauth2 before version 2.1.27 obtains the public key without any verification. This could allow attackers to authenticate to the application with a crafted JWT token.

Frequently asked questions

What is CVE-2023-31580?: light-oauth2 before version 2.1.27 obtains the public key without any verification. This could allow attackers to authenticate to the application with a crafted JWT token.
How severe is CVE-2023-31580?: CVE-2023-31580 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-31580 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31580?: CVE-2023-31580 affects Networknt Light-oauth2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31580?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-31580 published?: CVE-2023-31580 was published on 2023-10-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:networknt:light-oauth2:*:*:*:*:*:*:*:*

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