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VulnerabilityPublished

CVE-2026-91940: unclecode crawl4ai · Path Traversal

Affects unclecode crawl4aiSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 0.9.3 soon.

Data as of 30 Oct 2026, 20:25 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade crawl4ai and unclecode/crawl4ai to 0.9.3.

Affected software

ProductAffectedFixed in
unclecodecrawl4aiAffected
  • >=0.9.0 <0.9.3
Fixed in
  • 0.9.3
GitHubunclecode/crawl4aipkg:github/unclecode/crawl4aiOther threatsAffected
  • >=0.9.0 <0.9.3
Fixed in
  • 0.9.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade crawl4ai to version 0.9.3 or later where this vulnerability is fixed. Since this is a software vulnerability with a known fixed version, applying the official patch is the recommended remediation.

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.

References

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