Authenticated file disclosure via unrestricted attachment URL
Published Jan 16, 2024 · Updated Jun 17, 2025
Server-side request forgery in Austin 1.0 allows remote authenticated users to read server files through crafted email templates. The getRemoteUrl2File method passes an unrestricted attachment URL from an email template to java.net.URL.openStream, then attaches the fetched bytes. Template-management access and a test send are required; a file URI can disclose readable local files by emailing them as attachments.
Summary
What happened
Server-side request forgery in Austin 1.0 allows remote authenticated users to read server files through crafted email templates. The getRemoteUrl2File method passes an unrestricted attachment URL from an email template to java.net.URL.openStream, then attaches the fetched bytes. Template-management access and a test send are required; a file URI can disclose readable local files by emailing them as attachments.
The record
- CVE
- CVE-2024-0601
- Published
- Jan 16, 2024
- Updated
- Jun 17, 2025
- Vendor
- ZhongFuCheng3y
- Product
- Austin
- Classifications
- CWE-918, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 16, 2024CVE publishedPublication date reported by the CVE source.
- Jun 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.0
What conditions does exploitation require?
What is affected?
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.
Public exploit references
- Austin SSRF proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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