datamodel-code-generator generates Python data models from schema definitions. Prior to 0.63.0, src/datamodel_code_generator/http.py get_body reuses Authorization, Cookie, and Proxy-Authorization headers when following cross-origin redirects while fetching remote schemas, allowing credentials scoped to one schema host to be leaked to another redirect target. This issue is fixed in version 0.63.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-200",
"CWE-601"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55403.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.63.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "a585c037c8307b7aae815de193b7fe1c4c44994b"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "0.63.0",
"range": [
{
"fixed": "a1252a218df10537cd0526ae69757cde446a1ce6"
}
],
"source": "REFERENCES_TAG"
}
]
}