CVE-2026-116066

MEDIUM 6.8

Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Service

CVSS Score

6.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	firecrawl
Product	firecrawl
Published	Oct 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Firecrawl / Firecrawl

0 < 2.11.586

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/firecrawl/firecrawl/issues/5256 github.com: https://github.com/firecrawl/firecrawl github.com: https://github.com/firecrawl/firecrawl/blob/5c198a7d9376fef21a7f6d74313fc957842744ad/apps/playwright-service-ts/api.ts#L47-L117 github.com: https://github.com/firecrawl/firecrawl/commit/5e74ff37b41ac650d6bccff170a9be0a6decb946 vulncheck.com: https://www.vulncheck.com/advisories/firecrawl-before-2.11.586-ssrf-protection-bypass-via-dns-rebinding-in-playwright-service

Credits

George Chen