Credential disclosure via cross-origin redirect header reuse
Published Jul 28, 2026 · Updated Jul 28, 2026
Information disclosure in koxudaxi datamodel-code-generator before 0.63.0 allows remote attackers to obtain schema-fetch credentials. The get_body function in src/datamodel_code_generator/http.py reissues Authorization, Cookie, and Proxy-Authorization headers unchanged when a redirect crosses scheme, host, or port. Exploitation requires credential-bearing remote schema retrieval and an attacker-influenced cross-origin redirect; the exposed credentials can be replayed against the trusted schema host.
Summary
What happened
Information disclosure in koxudaxi datamodel-code-generator before 0.63.0 allows remote attackers to obtain schema-fetch credentials. The get_body function in src/datamodel_code_generator/http.py reissues Authorization, Cookie, and Proxy-Authorization headers unchanged when a redirect crosses scheme, host, or port. Exploitation requires credential-bearing remote schema retrieval and an attacker-influenced cross-origin redirect; the exposed credentials can be replayed against the trusted schema host.
The record
- CVE
- CVE-2026-55403
- Published
- Jul 28, 2026
- Updated
- Jul 28, 2026
- Vendor
- koxudaxi
- Product
- datamodel-code-generator
- Classifications
- CWE-200, CWE-601, T1212
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 28, 2026CVE publishedPublication date reported by the CVE source.
- Jul 28, 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=< 0.63.0
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
- Cross-origin redirect header leak reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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