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HIGH severity

CVE-2026-57993 — Edge Chromium

HIGH

CVE-2026-57993 is a high-severity (CVSS 7.4) Server-Side Request Forgery (SSRF) vulnerability in microsoft edge chromium. A fix is available — see the affected versions and patch details below.

Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

Published
Jul 3, 2026
Updated
Jul 6, 2026
Affected
1 product
Patched
See advisory
Exploits
None indexed
Exploitation data as of Sep 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-57993.

EPSS Exploitation Probability

via FIRST.org ↗
0.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs57th percentile — riskier than 57% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-57993 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 380,526 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

Affected Products

1 product · 1 configurations
Application
edge chromiummicrosoft
< 150.0.4078.48
range

Detection & mitigation playbook

Vendor / appliance

  1. Detect

    Inventory every microsoft edge chromium deployment and check each version against the affected-products list above.

  2. Fix

    Apply the microsoft edge chromium security patch or hotfix for CVE-2026-57993 on the affected version, following the vendor advisory for your exact build.

  3. Workarounds

    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
O3 Security · Runtime Protection

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CVE-2026-57993: Edge Chromium (High 7.4) | O3 Security