CVE-2021-29261
HIGHCVSS 7.8/10EPSS 1.24%
Last modified
CVE-2021-29261 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The unofficial Svelte extension before 104.8.0 for Visual Studio Code allows attackers to execute arbitrary code via a crafted workspace configuration.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.
Description
The unofficial Svelte extension before 104.8.0 for Visual Studio Code allows attackers to execute arbitrary code via a crafted workspace configuration.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Svelte | Svelte | < 104.8.0 |
References
- https://github.com/sveltejs/language-tools/commit/5d7bf1fd98bfe2cd2080863a3c95ce099b898075Patch, Third Party Advisory
- https://github.com/sveltejs/language-tools/releasesThird Party Advisory
- https://github.com/sveltejs/language-tools/releases/tag/extensions-104.8.0Release Notes, Third Party Advisory
- https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscodeProduct, Third Party Advisory
- https://vuln.ryotak.me/advisories/3Third Party Advisory
- https://github.com/sveltejs/language-tools/commit/5d7bf1fd98bfe2cd2080863a3c95ce099b898075Patch, Third Party Advisory
- https://github.com/sveltejs/language-tools/releasesThird Party Advisory
- https://github.com/sveltejs/language-tools/releases/tag/extensions-104.8.0Release Notes, Third Party Advisory
- https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscodeProduct, Third Party Advisory
- https://vuln.ryotak.me/advisories/3Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-29261?
The unofficial Svelte extension before 104.8.0 for Visual Studio Code allows attackers to execute arbitrary code via a crafted workspace configuration.
How severe is CVE-2021-29261?
CVE-2021-29261 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29261?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-29261?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST