Arbitrary file write via skipped path validation
Published Jul 21, 2026 · Updated Jul 21, 2026
Path traversal in PraisonAI before 4.6.40 allows remote authenticated users to write attacker-controlled content to arbitrary file paths. The write_file function in code/tools/write_file.py skips workspace containment validation when workspace is None, the production value. Exploitation requires an agent workflow to crawl attacker-controlled content with write_file available; the result is unauthorized file creation or overwrite under the PraisonAI process account.
Summary
What happened
Path traversal in PraisonAI before 4.6.40 allows remote authenticated users to write attacker-controlled content to arbitrary file paths. The write_file function in code/tools/write_file.py skips workspace containment validation when workspace is None, the production value. Exploitation requires an agent workflow to crawl attacker-controlled content with write_file available; the result is unauthorized file creation or overwrite under the PraisonAI process account.
The record
- CVE
- CVE-2026-47397
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- PraisonAI
- Product
- PraisonAI
- Classifications
- CWE-22
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 21, 2026CVE publishedPublication date reported by the CVE source.
- Jul 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 4.6.40
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- Embedded Python API arbitrary-write proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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