Firecrawl up to 2.11.31 Schema Dereferencing dereference-schema.ts path traversal

Summaryinfo

A vulnerability identified as problematic has been detected in Firecrawl up to 2.11.31. This impacts an unknown function of the file apps/api/src/lib/extract/helpers/dereference-schema.ts of the component Schema Dereferencing. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-72904. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Firecrawl up to 2.11.31. It has been rated as problematic. This issue affects some unknown functionality of the file apps/api/src/lib/extract/helpers/dereference-schema.ts of the component Schema Dereferencing. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

Firecrawl turns entire websites into LLM-ready markdown or structured data. Prior to 2.11.32, a critical arbitrary file read vulnerability exists in Firecrawl's extraction functionality due to unsafe schema dereferencing of user-supplied JSON schemas in apps/api/src/lib/extract/helpers/dereference-schema.ts. The affected code invokes the json-schema-ref-parser dependency with default resolver settings, allowing external and local file references to be resolved during schema processing. An authenticated attacker can supply a malicious schema containing a $ref within default, const, or enum fields that are not traversed by AJV validation. By triggering a dereference error, file contents from the extract worker filesystem may be included in persisted error messages returned through the extraction API, enabling arbitrary file reads and SSRF against internal or external HTTP endpoints. This issue is fixed in version 2.11.32.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-72904 since 08/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 2.11.32 eliminates this vulnerability.

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Productinfo

Name

• Firecrawl

Version

• 2.11.0
• 2.11.1
• 2.11.2
• 2.11.3
• 2.11.4
• 2.11.5
• 2.11.6
• 2.11.7
• 2.11.8
• 2.11.9
• 2.11.10
• 2.11.11
• 2.11.12
• 2.11.13
• 2.11.14
• 2.11.15
• 2.11.16
• 2.11.17
• 2.11.18
• 2.11.19
• 2.11.20
• 2.11.21
• 2.11.22
• 2.11.23
• 2.11.24
• 2.11.25
• 2.11.26
• 2.11.27
• 2.11.28
• 2.11.29
• 2.11.30
• 2.11.31

Website

• Product: https://github.com/firecrawl/firecrawl/

CPE 2.3info

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CPE 2.2info

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