CVE-2026-57978: CWE-346: Origin Validation Error in Microsoft Microsoft Edge (Chromium-based)
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-57978 and classified under CWE-346 (Origin Validation Error), affects Microsoft Edge (Chromium-based). It allows an attacker without privileges to spoof network communications by exploiting improper origin validation. The vulnerability has been assigned a CVSS v3.1 base score of 5.4, indicating medium severity. Microsoft has released an official fix to remediate this issue.
Potential Impact
The impact of this vulnerability is limited to potential spoofing attacks over a network, which could lead to limited confidentiality and integrity loss. There is no indication of availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided security update to Microsoft Edge (Chromium-based) to remediate the issue. Since the remediation level is 'official-fix', no additional mitigation steps are required beyond applying the patch.
CVE-2026-57978: CWE-346: Origin Validation Error in Microsoft Microsoft Edge (Chromium-based)
Description
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVSS v3.1
Score 5.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-57978 and classified under CWE-346 (Origin Validation Error), affects Microsoft Edge (Chromium-based). It allows an attacker without privileges to spoof network communications by exploiting improper origin validation. The vulnerability has been assigned a CVSS v3.1 base score of 5.4, indicating medium severity. Microsoft has released an official fix to remediate this issue.
Potential Impact
The impact of this vulnerability is limited to potential spoofing attacks over a network, which could lead to limited confidentiality and integrity loss. There is no indication of availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided security update to Microsoft Edge (Chromium-based) to remediate the issue. Since the remediation level is 'official-fix', no additional mitigation steps are required beyond applying the patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vx88-58rg-q48h
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-57978"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- Remediation Level
- official-fix
Threat ID: 6a668e339c2644c7f891a084
Added to database: 07/26/2026, 22:46:11 UTC
Last enriched: 08/08/2026, 16:49:45 UTC
Last updated: 09/09/2026, 10:52:10 UTC
Views: 107
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