Cross-site scripting in Symantec Messaging Gateway
Priority LOW 23CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Symantec Messaging Gateway, prior to 10.7.3, may be susceptible to a cross-site scripting (XSS) exploit, which is a type of issue that can enable attackers to inject client-side scripts into web pages viewed by other users. A cross-site scripting vulnerability may be used by attackers to potentially bypass access controls such as the same-origin policy.
Why it matters now
EPSS 0.00727 54th percentileScored 2026-11-07
Fix Fixed Symantec Messaging Gateway: 10.7.3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Symantec Messaging Gateway | before 10.7.3 | 10.7.3 | Patch available | CNA |
- Symantec Messaging Gateway Vendor— Affected before 10.7.3 Fixed in 10.7.3 Patch available CNA
Remediation
- Fix · CNA Symantec Messaging Gateway Fixed in 10.7.3
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18378
- 2026-10-03 Alias added: GHSA-r4mf-29c6-hhqm
References
More Symantec Messaging Gateway vulnerabilities
- TI-2017-04156 The Symantec Messaging Gateway can encounter an issue of remote code execution, which… CVSS 3.0CRITICAL 10.0
- TI-2012-03102 Symantec Messaging Gateway (SMG) before 10.0 has a default password for an unspecified… CVSS 2.0HIGH 7.9
- TI-2016-04608 Directory traversal vulnerability in the charting component in Symantec Messaging Gateway… CVSS 3.0MEDIUM 6.5
- TI-2012-03702 Multiple directory traversal vulnerabilities in the management console in Symantec… CVSS 2.0MEDIUM 5.0
- TI-2018-08781 Improper authentication in Symantec Messaging Gateway CVSS 3.0CRITICAL 9.8
- TI-2012-05122 Multiple unspecified vulnerabilities in Autonomy KeyView IDOL before 10.16, as used in… CVSS 3.1HIGH 7.8
Sources
- CVE-2019-18378 · CVE Program
- CVE-2019-18378 · NVD
- FIRST EPSS
- GHSA-r4mf-29c6-hhqm · GitHub Advisory Database · CC BY 4.0
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