An information disclosure vulnerability in the?faye endpoint in Proofpoint Threat Response / Threat Response Auto-Pull (PTR/TRAP) could be used by an attacker on an adjacent network to obtain credentials to integrated services via a man-in-the-middle position or cryptanalysis of the session traffic. An attacker could use these credentials to impersonate PTR/TRAP to these services. All versions prior to 5.10.0 are affected. 

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-2820
• https://www.proofpoint.com/security/security-advisories/pfpt-sa-2023-0003