Multipart field overwrite via unescaped filenames
Published Jan 4, 2024 · Updated Jul 14, 2026
Request tampering in HTTParty 0.20.0 and earlier allows remote attackers to overwrite multipart field names via crafted filenames. The generate_multipart method inserts file_name(value) into the quoted Content-Disposition filename attribute without escaping quotes, carriage returns, or line feeds. Exploitation requires an application to pass attacker-controlled filenames to HTTParty and a receiving parser that honors the injected fields, enabling field impersonation or filename-extension changes.
Summary
What happened
Request tampering in HTTParty 0.20.0 and earlier allows remote attackers to overwrite multipart field names via crafted filenames. The generate_multipart method inserts file_name(value) into the quoted Content-Disposition filename attribute without escaping quotes, carriage returns, or line feeds. Exploitation requires an application to pass attacker-controlled filenames to HTTParty and a receiving parser that honors the injected fields, enabling field impersonation or filename-extension changes.
The record
- CVE
- CVE-2024-22049
- Published
- Jan 4, 2024
- Updated
- Jul 14, 2026
- Vendor
- John Nunemaker
- Product
- HTTParty
- Classifications
- CWE-472, T1565.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 4, 2024CVE publishedPublication date reported by the CVE source.
- Jul 14, 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 <=0.20.0
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
- GHSA-5pq7-52mg-hr42 multipart request proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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