CVE-2023-5771

HTML injection in AdminUI through email subject

Description

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.15%
Vendor Advisory proofpoint.com
Affected: Proofpoint Proofpoint Enterprise Protection
Published at:
Updated at:

References

Link Tags
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0010 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-5771?
CVE-2023-5771 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5771?
To fix CVE-2023-5771, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-5771 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5771 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5771?
CVE-2023-5771 affects Proofpoint Proofpoint Enterprise Protection.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.