CVE-2026-57989: CWE-346: Origin Validation Error in Microsoft Microsoft Edge (Chromium-based)
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-346 (Origin Validation Error), affects Microsoft Edge (Chromium-based) and enables unauthorized information disclosure over a network due to improper origin validation. The CVSS v3.1 base score is 7.4, reflecting a network attack vector with low complexity and no privileges required but requiring user interaction. The impact is high confidentiality loss without integrity or availability impact. Microsoft has released an official fix addressing this issue.
Potential Impact
An attacker can exploit this vulnerability remotely without privileges to cause a high confidentiality impact by disclosing sensitive information over the network. There is no impact on integrity or availability. User interaction is required for exploitation.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the provided patch or update Microsoft Edge (Chromium-based) to the fixed version as soon as possible to mitigate the risk. No additional mitigation actions are indicated by the vendor.
CVE-2026-57989: 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 disclose information over a network.
CVSS v3.1
Score 7.4high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-346 (Origin Validation Error), affects Microsoft Edge (Chromium-based) and enables unauthorized information disclosure over a network due to improper origin validation. The CVSS v3.1 base score is 7.4, reflecting a network attack vector with low complexity and no privileges required but requiring user interaction. The impact is high confidentiality loss without integrity or availability impact. Microsoft has released an official fix addressing this issue.
Potential Impact
An attacker can exploit this vulnerability remotely without privileges to cause a high confidentiality impact by disclosing sensitive information over the network. There is no impact on integrity or availability. User interaction is required for exploitation.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the provided patch or update Microsoft Edge (Chromium-based) to the fixed version as soon as possible to mitigate the risk. No additional mitigation actions are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-cwgc-vfm7-rq3r
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-57989"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- Remediation Level
- official-fix
Threat ID: 6a668e339c2644c7f891a088
Added to database: 07/26/2026, 22:46:11 UTC
Last enriched: 08/08/2026, 16:48:48 UTC
Last updated: 09/09/2026, 10:52:10 UTC
Views: 115
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