PYSEC-2026-2138
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/crawl4ai/PYSEC-2026-2138.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2138
- Aliases
- Published
- 2026-07-06T21:16:57Z
- Modified
- 2026-07-13T07:15:22Z
- Severity
-
- 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, when the crawler saves a downloaded file, the destination filename was taken from attacker-influenced input and joined to the downloads directory with no confinement. A filename containing an absolute path or traversal escaped the downloads directory, giving an arbitrary file write with attacker-controlled contents; the HTTP crawler path uses the response Content-Disposition filename and the browser crawler path uses the download's suggested filename. Because the written bytes are attacker-controlled, this can escalate to remote code execution. This issue is fixed in version 0.9.0.
- References
Affected packages
PyPI / crawl4ai
Package
- Name
- crawl4ai
- View open source insights on deps.dev
- Purl
- pkg:pypi/crawl4ai
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed0.9.0
Affected versions
0.*
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.3.71
0.3.72
0.3.73
0.3.74
0.3.731
0.3.741
0.3.742
0.3.743
0.3.744
0.3.745
0.3.746
0.4.0
0.4.1
0.4.3b1
0.4.3b2
0.4.3b3
0.4.21
0.4.22
0.4.23
0.4.24
0.4.241
0.4.242
0.4.243
0.4.244
0.4.245
0.4.246
0.4.247
0.4.248b3
0.4.248
0.5.0
0.5.0.post1
0.5.0.post2
0.5.0.post3
0.5.0.post4
0.5.0.post5
0.5.0.post6
0.5.0.post7
0.5.0.post8
0.6.0rc1
0.6.0
0.6.1
0.6.2
0.6.3
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.7.5
0.7.6
0.7.7
0.7.8
0.8.0
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9