CVE-2023-5770 (GCVE-0-2023-5770)
Vulnerability from cvelistv5 – Published: 2024-01-09 22:02 – Updated: 2025-06-03 14:29
VLAI
EPSS
VEX
Title
HTML injection in email body through email subject
Summary
Proofpoint Enterprise Protection contains a vulnerability in the email delivery agent that allows an unauthenticated attacker to inject improperly encoded HTML into the email body of a message through the email subject. The vulnerability is caused by inappropriate encoding when rewriting the email before delivery.This issue affects Proofpoint Enterprise Protection: from 8.20.2 before patch 4809, from 8.20.0 before patch 4805, from 8.18.6 before patch 4804 and all other prior versions.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-08 18:43 UTC
CWE
- CWE-838 - Inappropriate Encoding for Output Context
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Proofpoint | Proofpoint Enterprise Protection |
Affected:
8.20.2 , < patch 4809
(semver)
Affected: 8.20.0 , < patch 4805 (semver) Affected: 8.18.6 , < patch 4804 (semver) Affected: 8.0 , < 8.18.6 (semver) |
guessed |
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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