CVE-2026-116066
Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Service
- State
- Published
- Severity
- 7.0 High
- Published
- Oct 25, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 25, 2026
Description
Firecrawl before 2.11.586 contains a server-side request forgery vulnerability in the Playwright service SSRF proxy that allows attackers to bypass isInternalHost checks via DNS rebinding. Attackers controlling DNS for a scrape target can return a public address during validation and a private address at connect time, retrieving cloud metadata and internal resources through the scrape API.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.0 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:L | VulnCheck |
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
FirecrawlFirecrawl |
|
References
- GitHub Issue #5256issue-tracking
- https://github.com/firecrawl/firecrawlproduct
- https://github.com/firecrawl/firecrawl/blob/5c198a7d9376fef21a7f6d74313fc957842744ad/apps/playwright-service-ts/api.ts#L47-L117technical-description
- https://github.com/firecrawl/firecrawl/commit/5e74ff37b41ac650d6bccff170a9be0a6decb946patch
- VulnCheck Advisory: Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Servicethird-party-advisory
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