CVE-2023-31580
light-oauth2 missing public key verification
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2023-31580- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2023-31580- Updated
- 2026-11-02
EUVDEUVD-2023-2786 No score
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.
- Record
EUVD-2023-2786- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mx47-h5fv-ghwh
light-oauth2 missing public key verification
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.
- Record
GHSA-mx47-h5fv-ghwh- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-295, CWE-347
- Updated
- 2026-11-02
OSVGHSA-mx47-h5fv-ghwh
light-oauth2 missing public key verification
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.
- Record
GHSA-mx47-h5fv-ghwh- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-295, CWE-347
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.networknt:light-oauth2Maven |
before 2.1.27 | 2.1.27 |
com.networknt:light-oauth2Maven |
before 2.1.27, plus listed versions 1.2.41.3.11.3.41.3.51.4.0 Show 24 moreShow less1.5.42.1.02.1.12.1.102.1.112.1.122.1.152.1.162.1.182.1.192.1.22.1.202.1.222.1.232.1.242.1.252.1.262.1.32.1.42.1.52.1.62.1.72.1.82.1.9 |
2.1.27 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-31580 is a medium vulnerability (CVSS 5.9) in Networknt Light-oauth2, published October 24, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 52nd percentile. Fixed in com.networknt:light-oauth2 2.1.27.