Local corpus disclosure via symlinked extraction directory
Published Jul 9, 2026 · Updated Jul 9, 2026
Path redirection in ChatterBot before 1.2.14 allows local users to read extracted corpus files from an attacker-chosen directory. UbuntuCorpusTrainer.extract() checks a predictable home-directory path with os.path.exists(), then passes that path to tar.extractall() without rejecting a pre-planted directory symlink. Exploitation requires local filesystem access before training begins and exposes extracted corpus contents without a reported ability to modify existing files or interrupt the service.
Summary
What happened
Path redirection in ChatterBot before 1.2.14 allows local users to read extracted corpus files from an attacker-chosen directory. UbuntuCorpusTrainer.extract() checks a predictable home-directory path with os.path.exists(), then passes that path to tar.extractall() without rejecting a pre-planted directory symlink. Exploitation requires local filesystem access before training begins and exposes extracted corpus contents without a reported ability to modify existing files or interrupt the service.
The record
- CVE
- CVE-2026-58198
- Published
- Jul 9, 2026
- Updated
- Jul 9, 2026
- Vendor
- Gunther Cox
- Product
- ChatterBot
- Classifications
- CWE-59, CWE-367, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 9, 2026CVE publishedPublication date reported by the CVE source.
- Jul 9, 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=< 1.2.14
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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