crawl4ai before 0.9.3 Arbitrary File Write via PDFContentScrapingStrategy (CVE-2026-91940) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-91940

crawl4ai before 0.9.3 Arbitrary File Write via PDFContentScrapingStrategy

Answer in brief

CVE-2026-91940 records a Unknown severity vulnerability in crawl4ai before 0.9.3 Arbitrary File Write via PDFContentScrapingStrategy. The current sources do not mark it as known exploited. The current feed maps unclecode/crawl4ai (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 15, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps unclecode/crawl4ai (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
unclecode/crawl4aigeneric	>=0.9.0 <0.9.3	0.9.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for unclecode/crawl4ai.
Review the reported fix. Update unclecode/crawl4ai to 0.9.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source description

crawl4ai before 0.9.3 contains an arbitrary file write vulnerability in PDFContentScrapingStrategy where the _filter_untrusted_fields function fails to validate untrusted configuration fields. Attackers can submit crafted config bodies with malicious image_save_dir paths to write attacker-controlled bytes into any directory accessible to the service account.

Quoted source text, attributed separately from HOL analysis.