CVE-2021-42308 Microsoft Edge (Chromium-based) Spoofing Vulnerability
Low 3.1
Published
Updated
Check this codebase for CVE-2021-42308 and fix it if it is affected.
What it is: CVE-2021-42308 is a low-severity vulnerability in Microsoft Edge Chromium, published on 24 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-42308 in the wild and no public exploit code.
Affected product: Microsoft Edge Chromium. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2021-42308/ (Markdown: https://insights.sbomify.com/CVE-2021-42308/index.md)
Attackers can spoof content in Microsoft Edge, potentially misleading users about the displayed information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-42308?
CVE-2021-42308 is a low-severity vulnerability in Microsoft Edge Chromium, published on 24 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Weakness: CWE-290
Which versions are affected by CVE-2021-42308?
It affects 1 product.
Products include Microsoft Edge Chromium.
How do I fix CVE-2021-42308?
No fix has been published for CVE-2021-42308 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-42308 being exploited?
There is no known exploitation of CVE-2021-42308 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Edge Chromium
- CVE-2024-21326 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-35618 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-36735 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2022-33649 Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
- CVE-2026-58289 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Sources
Also known as GHSA-8xpv-h7vw-hc6h.