CVE-2026-84947 undici vulnerable to response truncation via oversized chunked responses in the dump interceptor

undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion...

CVE-2026-84947

undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion...

CVE-2026-85008 undici vulnerable to caching and replay of unsafe HTTP method responses

undici's cache interceptor documents that only safe HTTP methods are cached, but its logic to skip caching is built by subtracting the configured methods from the set of safe methods, so an unsafe method such as POST, PUT, or DELETE is never placed in the skip list and instead falls through to th...

CVE-2026-85008

undici's cache interceptor documents that only safe HTTP methods are cached, but its logic to skip caching is built by subtracting the configured methods from the set of safe methods, so an unsafe method such as POST, PUT, or DELETE is never placed in the skip list and instead falls through to th...

CVE-2026-85008

undici , a Node.js HTTP client library, contains an integrity flaw in its cache interceptor . The skip-caching logic subtracts configured methods from the set of safe methods, so unsafe methods such as POST , PUT , or DELETE are never excluded and fall through to the cache-read path. The response...

CVE-2026-85152 undici vulnerable to cross-origin cache poisoning via missing origin isolation in interceptors

undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or deduplicate interceptor is composed directly onto a Client or Pool. Because the internal cache key falls back to an empty origin string, a cacheable or in-flight response from one upstream...

PT-2026-85805

Name of the Vulnerable Software and Affected Versions undici versions 7.0.0 through 7.29.0 undici versions 8.0.0 through 8.10.1 Description The cache interceptor incorrectly handles the caching of unsafe HTTP methods. While documentation states only safe methods are cached, the logic used to skip...

CVE-2026-84890: Allocation of Resources Without Limits or Throttling

undici's decompress interceptor decompresses response bodies according to the untrusted Content-Encoding header. While the number of content-encoding layers is capped, the total decompressed output size is unbounded and there is no configuration option to limit it. A malicious or faulty upstream...

CVE-2026-18540: Inconsistent Interpretation of HTTP Requests

undici's retry interceptor can append the body of a ranged retry response to bytes already delivered from an earlier partial response while still presenting the original response's status and headers. This happens when an upstream server delivers part of a body without a trustworthy resume...

PT-2026-91806

undici's retry interceptor can append the body of a ranged retry response to bytes already delivered from an earlier partial response while still presenting the original response's status and headers. This happens when an upstream server delivers part of a body without a trustworthy resume...

PT-2026-86152

Name of the Vulnerable Software and Affected Versions undici versions 7.0.0 through 7.29.0 undici versions 8.0.0 through 8.10.1 Description The cache interceptor fails to handle the Set-Cookie response header, allowing it to be stored and re-served in shared cache mode. This occurs when a cacheab...

CVE-2026-84890: Allocation of Resources Without Limits or Throttling

undici's decompress interceptor decompresses response bodies according to the untrusted Content-Encoding header. While the number of content-encoding layers is capped, the total decompressed output size is unbounded and there is no configuration option to limit it. A malicious or faulty upstream...

CVE-2026-84947: Improper Input Validation

undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion...

CVE-2026-85008: Insufficient Verification of Data Authenticity

undici's cache interceptor documents that only safe HTTP methods are cached, but its logic to skip caching is built by subtracting the configured methods from the set of safe methods, so an unsafe method such as POST, PUT, or DELETE is never placed in the skip list and instead falls through to th...

PT-2026-86153

Name of the Vulnerable Software and Affected Versions undici versions 7.1.0 through 7.29.0 undici versions 8.0.0 through 8.10.1 Description The dump interceptor reads and discards response bodies up to a configurable maximum size. When a response is chunked and lacks a Content-Length, the...

PT-2026-86206

Name of the Vulnerable Software and Affected Versions undici versions 7.15.0 through 7.29.0 undici versions 8.0.0 through 8.10.1 Description The decompress interceptor decompresses response bodies based on the untrusted Content-Encoding header. Although the number of encoding layers is capped, th...

CVE-2026-84933: Exposure of Sensitive Information to an Unauthorized Actor

undici's cache interceptor does not handle the Set-Cookie response header anywhere in its cache path, so it neither refuses to store nor strips that header. In shared cache mode, which is the default, an otherwise cacheable response that carries a Set-Cookie header, for example one marked with a...

CVE-2026-84933: Exposure of Sensitive Information to an Unauthorized Actor

undici's cache interceptor does not handle the Set-Cookie response header anywhere in its cache path, so it neither refuses to store nor strips that header. In shared cache mode, which is the default, an otherwise cacheable response that carries a Set-Cookie header, for example one marked with a...

CVE-2026-85008: Insufficient Verification of Data Authenticity

undici's cache interceptor documents that only safe HTTP methods are cached, but its logic to skip caching is built by subtracting the configured methods from the set of safe methods, so an unsafe method such as POST, PUT, or DELETE is never placed in the skip list and instead falls through to th...

CVE-2026-84947: Improper Input Validation

undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion...