CVE-2026-58278
CVE-2026-58278 is a medium-severity vulnerability in Microsoft Edge Chromium with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-918
- Affected product: Microsoft Edge Chromium
- Published:
- Last modified:
Description
Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Frequently asked questions
- What is CVE-2026-58278?
- Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
- How severe is CVE-2026-58278?
- CVE-2026-58278 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.
- Is CVE-2026-58278 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-58278?
- CVE-2026-58278 affects Microsoft Edge Chromium. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-58278?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-58278 published?
- CVE-2026-58278 was published on 2026-07-03 and last updated on 2026-07-06.
References
Affected products (1)
- cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:*
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