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Python CVE-2026-91943

| EUVDEUVD-2026-78800 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-15 VulnCheck GHSA-92qr-m259-5rqq
Python SSRF Crawl4ai Unclecode
8.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.3 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from Vendor (VulnCheck) · only source for this CVE.

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Sep 15, 2026 - 16:03 EUVD
Analysis Generated
Sep 15, 2026 - 16:01 vuln.today
CVE Published
Sep 15, 2026 - 15:18 cve.org
HIGH 8.3

DescriptionCVE.org

Crawl4AI before 0.9.3 contains a server-side request forgery vulnerability in PDFContentScrapingStrategy where _get_pdf_path() re-downloads targets with Python requests without egress validation. Authenticated attackers can supply URLs that redirect to internal addresses or use DNS rebinding to access internal services, exfiltrating responses through PDF text extraction in crawl results.

Articles & Coverage 1

News We need answer only title. Need format "N New [Product] Vulnerabilities - X Critical, Y With POC" but severity has critical 1 high 4. Example says X Critical maybe for critical count. User provided Severity {'CRITICAL':1,'HIGH':4}. POC count 2. Need concise article title max 100 chars. Format: "5 New Python Vulnerabilities - 1 Critical, 2 With POC". Return ONLY title no quotes. Need ensure maybe include high? Format says X Critical. Could be "1 Critical, 4 High, Sep 15, 2026

AnalysisAI

Server-side request forgery in Crawl4AI before 0.9.3 lets an authenticated user of the crawling service force the server to fetch arbitrary internal URLs through the PDF scraping path. The PDFContentScrapingStrategy helper _get_pdf_path() re-downloads the target with the Python requests library without applying the crawler's egress validation, so an attacker-supplied URL that redirects to an internal address — or that relies on DNS rebinding — is fetched and its contents returned in the crawl result after PDF text extraction. …

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CVE-2026-91943 vulnerability details – vuln.today
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