fastify vulnerable to request body replacement via an async validation result collision
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| fastify | fastify | unaffected |
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| Fastify | Fastify |
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| Source | ID | Title |
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Github GHSA |
GHSA-667r-xxjv-c9mm | fastify vulnerable to request body replacement via an async validation result collision |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.428% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:fastify:fastify:*:*:*:*:*:node.js:*:* |
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| Metrics |
ssvc
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| Weaknesses | CWE-179 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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| First Time appeared |
Fastify
Fastify fastify |
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| Vendors & Products |
Fastify
Fastify fastify |
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| Description | fastify versions before 5.12.2 treat the object resolved by a successful Ajv async validator as the value result protocol used by custom validator compilers. If a request that passes its route schema contains a property named value at the root, fastify replaces the entire request body with that property's value before the handler runs, so the handler receives a different object than the one that satisfied the schema. An authenticated low-privilege caller can use this to make nested data replace the validated body and trigger an operation the route schema did not authorize, leading to unauthorized state changes and data disclosure. Users should upgrade to fastify 5.12.2 or later. | |
| Title | fastify vulnerable to request body replacement via an async validation result collision | |
| Weaknesses | CWE-20 | |
| References |
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| Metrics |
cvssV3_1
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