CVE-2023-40545
PingFederate OAuth client_secret_jwt Authentication Bypass
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
PingFederate OAuth client_secret_jwt Authentication Bypass
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.
- Record
CVE-2023-40545- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-306
- Updated
- 2026-11-02
EUVDEUVD-2023-45116
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.
- Record
EUVD-2023-45116- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-37j2-h4x2-rp3v
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication...
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.
- Record
GHSA-37j2-h4x2-rp3v- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-306
- Updated
- 2026-11-02
NVD
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.
- Record
CVE-2023-40545- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-306
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-40545 is a high vulnerability (CVSS 8.8) in Ping Identity Pingfederate, published February 6, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.93%, the 60th percentile. No source names a fixed version.
References
support.pingidentity.com/s/article/SECADV040-PingFederate-OAuth-Client-Authentication-Bypass
pingidentity.com/en/resources/downloads/pingfederate/previous-releases.html
docs.pingidentity.com/r/en-us/pingfederate-113/hro1701116403236
nvd.nist.gov/vuln/detail/CVE-2023-40545
github.com/advisories/GHSA-37j2-h4x2-rp3v