Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck

CVE-2026-116066Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Service

Medium 6.8

In plain English

A medium-severity server-side request forgery in Firecrawl from Firecrawl. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.3%top 79.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Firecrawl	Firecrawl	0 – before 2.11.586

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

References

GitHub Issue #5256 issue-tracking
https://github.com/firecrawl/firecrawl product
https://github.com/firecrawl/firecrawl/blob/5c198a7d9376fef21a7f6d74313fc957842744ad/apps/playwright-service-ts/api.ts#L47-L117 technical-description
https://github.com/firecrawl/firecrawl/commit/5e74ff37b41ac650d6bccff170a9be0a6decb946 patch
VulnCheck Advisory: Firecrawl before 2.11.586 SSRF Protection Bypass via DNS Rebinding in Playwright Service third-party-advisory