CVE-2026-56258 | Crawl4AI before 0.8.8 contains an arbitrary file write vulne… | CVSS 8.1 HIGH

Description

Crawl4AI before 0.8.8 contains an arbitrary file write vulnerability in the screenshot and PDF endpoints that allows unauthenticated attackers to write files outside the intended directory via symlink and time-of-check-time-of-use (TOCTOU) attacks on the output_path parameter. Remote attackers can exploit insufficient path validation and symlink following to achieve arbitrary file write and potential code execution on systems where the runtime user has write access to executable or cron locations.

Metadata

CVE ID: CVE-2026-56258
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-19 21:56 UTC
Published: 2026-06-23 12:12 UTC
Last updated: 2026-06-23 15:05 UTC
Primary CWE: CWE-22
Improper Limitation of a Pathname to a Restricted Directory …
Vendor / Product: Crawl4AI / Crawl4AI
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Crawl4AI	Crawl4AI	—	0 < 0.8.8, 0.8.8

Weakness (CWE)

CWE	Source	Description
CWE-22	cna	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.2	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)

GitHub Security Advisory (GHSA-7cx2-g3h9-382p) https://github.com/unclecode/crawl4ai/security/advisories/GHSA-7cx2-g3h9-382p
VulnCheck Advisory: Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU https://www.vulncheck.com/advisories/crawl4ai-arbitrary-file-write-via-output-path-symlink-and-toctou