Vulnerability · Published Jul 3, 2026 · Assigned by microsoft
CVE-2026-58291Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Medium 6.1
In plain English
A medium-severity security flaw in Microsoft Edge (Chromium-based) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)1.0%top 37.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Operation on a resource after expiration or release in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | 1.0.0.0 – before 150.0.4078.48 |
Weakness: CWE-672 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
References
- Microsoft Edge (Chromium-based) Information Disclosure Vulnerability vendor-advisory, patch