What is CVE-2023-5771?

CVE-2023-5771 is a medium-severity vulnerability in Proofpoint Enterprise Protection, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-11-06.

How severe is CVE-2023-5771?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Proofpoint Enterprise Protection

CVE-2023-5771

Proofpoint Enterprise Protection contains a stored XSS vulnerability in the AdminUI. An unauthenticated attacker can send a specially crafted email with HTML in the subject which triggers XSS when viewing quarantined messages. This issue affects Proofpoint Enterprise Protection: from 8.20.0 before patch 4796, from 8.18.6 before patch 4795 and all other prior versions.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (26.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Proofpoint Enterprise_protection — versions 8.18.6, 8.20.0
Proofpoint Enterprise Protection — versions 8.20.0, 8.18.6, 8.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@proofpoint.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-5771?: CVE-2023-5771 is a medium-severity vulnerability in Proofpoint Enterprise Protection, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-11-06.
How severe is CVE-2023-5771?: Medium severity. CVSS v3 base score is 6.1 out of 10.