Detections
Analytics

SCA: security update for crawl4ai (GHSA-qxjp-w3pj-48m7)

critical Tenable Self-Hosted Container Security Plugin ID 443325

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.7, the _safe_eval_expression()
 function in the computed fields feature uses an AST validator that only blocks attributes starting with
 underscore. Python generator and frame object attributes (gi_frame, f_back, f_builtins) do NOT start with
 underscore, enabling a complete sandbox escape to achieve arbitrary code execution. The attack requires no
 authentication (JWT disabled by default) and is triggered via POST /crawl with a crafted extraction
 schema. This vulnerability is fixed in 0.8.7. (CVE-2026-53753)

Solution

Update the crawl4ai library and its related packages to version 0.8.7 or later.

See Also

https://github.com/advisories/GHSA-qxjp-w3pj-48m7

Plugin Details

Severity: Critical

ID: 443325

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 6/17/2026

Updated: 6/30/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.18

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-53753

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-53753