CVE-2026-97689 urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.readchunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

CVE-2026-97689 urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.readchunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

CVE-2026-97688

The Python HTTP client library urllib3 versions 2.6.2 through 2.8.0 are vulnerable to an infinite loop during chunked Deflate streaming. The issue exists because the Deflate decoder retains trailing bytes as unconsumed input after reaching the end-of-stream, repeatedly decoding them without progr...

CVE-2026-97688

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.readchunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The...

CVE-2026-97688 urllib3: Chunked Deflate streaming can enter an infinite loop

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.readchunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The...

PT-2026-102668

Name of the Vulnerable Software and Affected Versions urllib3 versions 1.10.3 through 2.7.x Description The HTTPResponse.read chunked and HTTPResponse.stream methods can allocate unbounded memory. This occurs because the streaming chunk parser buffers the chunk-size field without a length bound...

PT-2026-102667

Name of the Vulnerable Software and Affected Versions urllib3 versions 2.6.2 through 2.7.x Description An issue exists where HTTPResponse.stream and HTTPResponse.read chunked can enter an infinite loop. This occurs when a server sends a chunked Deflate response Transfer-Encoding: chunked and...

GO-2026-6495 Skipper has OPA body-authz bypass: truncated_body mitigation fails open on chunked/HTTP-2 (incomplete fix GHSA-8qqm-fp2q-v734) in github.com/zalando/skipper

Skipper has OPA body-authz bypass: truncatedbody mitigation fails open on chunked/HTTP-2 incomplete fix GHSA-8qqm-fp2q-v734 in github.com/zalando/skipper...

CVE-2024-14029

A vulnerability was discovered in Tornado where it improperly handles HTTP requests containing duplicate Transfer-Encoding: chunked headers. When duplicate Transfer-Encoding headers are present in an incoming request, Tornado ignores them and treats the request as body-less, leaving the chunked...

CVE-2026-94194 Mint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediaries

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the connection...

CVE-2026-94194 Mint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediaries

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the connection...

CVE-2026-94194

The elixir-mint library (versions 0.1.0 to 1.11.0 ) is vulnerable to HTTP Request/Response Smuggling due to the inconsistent interpretation of HTTP/1 framing. Specifically, the message_body/1 function in lib/mint/http1.ex incorrectly applies chunked framing when chunked is the first coding listed...

CVE-2026-94194 Mint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediaries

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the connection...

Ubuntu 26.04 LTS : OpenStack Swift vulnerability (USN-8821-1)

The remote Ubuntu 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8821-1 advisory. It was discovered that OpenStack Swift incorrectly handled truncated aws-chunked PUT request bodies in its s3api middleware. An authenticated attacker could...

USN-8821-1: OpenStack Swift vulnerability

It was discovered that OpenStack Swift incorrectly handled truncated aws-chunked PUT request bodies in its s3api middleware. An authenticated attacker could possibly use this issue to cause OpenStack Swift to use excessive resources, leading to a denial of service...

CVE-2026-88004

A flaw was found in Traefik, an open-source HTTP reverse proxy and load balancer. Its entrypoint defenses, designed to sanitize header names, failed to inspect request trailers. This allowed an unauthenticated client to submit malicious header names within HTTP/1.1 chunked or HTTP/2 trailers...

undertow-core: Undertow:HTTP request smuggling via oversized chunk-size bit overlap

A flaw was found in the ChunkReader component of the Undertow HTTP server, which is used by WildFly and JBoss EAP to handle chunked transfer encoding. The issue occurs because the parser uses a single internal variable to store both the remaining chunk size and state flags. By sending a specially...

undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...

undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...

undertow-core: OOM via missing limits in chunked trailer in EAP's Undertow

A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service...