CVE-2026-55945

Published Jul 3, 2026

Last updated 2 months ago

Overview

Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to disclose information locally.
Source
secure@microsoft.com
NVD status
Analyzed
Products
edge_chromium

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.2
Impact score
2.7
Exploitability score
1.1
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

secure@microsoft.com
CWE-362

Social media

Hype score
Not currently trending
  1. 🟠 π—›π—œπ—šπ—› Β· π——π—Άπ˜€π—°π˜‚π˜€π˜€π—Άπ—Όπ—» 🏒 Target: π—šπ—Όπ—Όπ—΄π—Ήπ—², π— π—Άπ—°π—Ώπ—Όπ˜€π—Όπ—³π˜, π—£π—²π—Ώπ—½π—Ήπ—²π˜…π—Άπ˜π˜† 🧩 Products: π—šπ—Όπ—Όπ—΄π—Ήπ—² 𝗖𝗡𝗿𝗼𝗺𝗲, π— π—Άπ—°π—Ώπ—Όπ˜€π—Ό

    @intels_daily

    21 Sept 2026

    119 Impressions

    0 Retweets

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  2. 🚨 AI SECURITY ALERT DISCLOSED BY: Forever Security PRODUCTS: Google Chrome / Gemini Live Microsoft Edge Perplexity Comet Opera Neon Claude in Chrome CVEs: CVE-2026-0628 β€” Chrome CVE-2026-55945 β€” Microsoft Edge IMPACT: A malicious browser extension can abuse trusted

    @Python_s_

    21 Sept 2026

    86 Impressions

    0 Retweets

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  3. BragJack: one unvetted browser extension hijacked the built-in AI agents in Chrome, Edge, Opera Neon, Comet and Claude in Chrome. No prompt injection needed, it crossed straight into the agent's privileged channel. CVE-2026-0628 and CVE-2026-55945 patched. #InfoSec #AISecurity

    @infrasecserv

    19 Sept 2026

    38 Impressions

    0 Retweets

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  4. BragJack: one ordinary extension commanded Claude in Chrome, Gemini Live, Edge, Comet, and Opera Neon. Forever Security took over the page the agent body already trusts, then sent it orders. Chrome got CVE-2026-0628. Edge got CVE-2026-55945. Comet, Neon, and Claude in Chrome

    @ethereaglehq

    16 Sept 2026

    44 Impressions

    0 Retweets

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    1 Reply

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Configurations

References

Sources include official advisories and independent security research.