CVE-2023-5771

6.1 mediumEPSS 0.3%

Medium (6.1) in proofpoint enterprise protection. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2023-11-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

proofpoint:enterprise_protection

References

https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0010
https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0010

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