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undici 8.x: Header field "content-type" must only have a single value

bugSomething isn't workingSomething isn't working

Status: Open.

#5175 In nodejs/undici;

· cesco69 opened on May 4, 2026

Content-Range parser rejects valid unknown-size byte ranges

bugSomething isn't workingSomething isn't working

Status: Open.

#5119 In nodejs/undici;

· trivikr opened on Apr 26, 2026

Use of HTTP_PROXY & NODE_USE_ENV_PROXY fails with an infinite loop

bugSomething isn't workingSomething isn't working

Status: Open.

#5093 In nodejs/undici;

· ArnaudBuchholz opened on Apr 23, 2026

sensitivity to order of connection errors

bugSomething isn't workingSomething isn't working

Status: Open.

#5092 In nodejs/undici;

· konrad-erli opened on Apr 22, 2026

HTTP/2 timeouts reject with UND_ERR_INFO; RetryAgent errorCodes for UND_ERR_BODY_TIMEOUT / UND_ERR_HEADERS_TIMEOUT no longer match

bugSomething isn't workingSomething isn't working

Status: Open.

#5087 In nodejs/undici;

· tbeseda opened on Apr 21, 2026

MockAgent as global dispatcher broken since version 8.0.3

bugSomething isn't workingSomething isn't working

Status: Open.

#5036 In nodejs/undici;

· targos opened on Apr 16, 2026

setEncoding('utf8') on response body corrupts multi-byte UTF-8 characters at chunk boundaries

bugSomething isn't workingSomething isn't working

Status: Open.

#5002 In nodejs/undici;

· joecwu opened on Apr 9, 2026

RetryHandler allows silent response body corruption via forged 206 response

bugSomething isn't workingSomething isn't working

Status: Open.

#4970 In nodejs/undici;

· samuel871211 opened on Apr 4, 2026

BalancedPool deteriorates to a single point of failure after outages

bugSomething isn't workingSomething isn't working

Status: Open.

#4839 In nodejs/undici;

· justSchilling opened on Feb 24, 2026

WebSocket allows more than one CONNECTING connection to the same (host, port)

bugSomething isn't workingSomething isn't working

websocketPull requests or issues related to websocket and its standardPull requests or issues related to websocket and its standard

Status: Open.

#4743 In nodejs/undici;

· domenic opened on Jan 17, 2026

WebSocket transitions back from CLOSED to CLOSING

bugSomething isn't workingSomething isn't working

websocketPull requests or issues related to websocket and its standardPull requests or issues related to websocket and its standard

Status: Open.

#4742 In nodejs/undici;

· domenic opened on Jan 17, 2026

WebSocket events fire synchronously during close() instead of asynchronously

bugSomething isn't workingSomething isn't working

websocketPull requests or issues related to websocket and its standardPull requests or issues related to websocket and its standard

Status: Open.

#4741 In nodejs/undici;

· domenic opened on Jan 17, 2026