File disclosure via spoofed rate-limit identity
Published Jul 20, 2026 · Updated Jul 20, 2026
Rate-limit bypass in vastsa FileCodeBox before 2.4 allows remote attackers to retrieve other users' shared files without authentication. IPRateLimit keys each caller's throttle bucket directly from X-Real-IP or X-Forwarded-For without verifying that the transport peer is a trusted proxy. Unauthenticated requests can rotate spoofed IP values to avoid the ten-failure limit, enumerate the 90,000 default numeric share codes, and read active shared files or text.
Summary
What happened
Rate-limit bypass in vastsa FileCodeBox before 2.4 allows remote attackers to retrieve other users' shared files without authentication. IPRateLimit keys each caller's throttle bucket directly from X-Real-IP or X-Forwarded-For without verifying that the transport peer is a trusted proxy. Unauthenticated requests can rotate spoofed IP values to avoid the ten-failure limit, enumerate the 90,000 default numeric share codes, and read active shared files or text.
The record
- CVE
- CVE-2026-64619
- Published
- Jul 20, 2026
- Updated
- Jul 20, 2026
- Vendor
- vastsa
- Product
- FileCodeBox
- Classifications
- CWE-348, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 20, 2026CVE publishedPublication date reported by the CVE source.
- Jul 20, 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=0 <2.4
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
- FileCodeBox spoofed-header rate-limit bypass reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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