Issues

http: more than 50 unknown headers closes the connection with no response

fluent/fluent-bit#12660 · opened

on Oct 25, 2026

1

http: most parse errors close the connection with no response (only bad-method returns 400)

fluent/fluent-bit#12658 · opened

on Oct 25, 2026

2

http: empty Host header closes the connection with no response

fluent/fluent-bit#12657 · opened

on Oct 25, 2026

http: Transfer-Encoding chunked plus Content-Length hangs forever (CL branch shadows the chunked path)

fluent/fluent-bit#12656 · opened

on Oct 25, 2026

3

in_http: Connection: close is parsed but never acted on, connection idles to the 10s timeout

fluent/fluent-bit#12655 · opened

on Oct 25, 2026

2

http server ignores Expect: 100-continue, clients stall until their own timeout

fluent/fluent-bit#12654 · opened

on Oct 25, 2026

in_http: leftover pipelined data is never re-parsed after a request is consumed

fluent/fluent-bit#12653 · opened

on Oct 25, 2026

1

http: body length is the remaining buffer, not Content-Length (breaks pipelining and corrupts bodies)

fluent/fluent-bit#12652 · opened

on Oct 25, 2026

in_http: JSON array of scalars returns 201 but is silently dropped

fluent/fluent-bit#12651 · opened

on Oct 25, 2026

1

in_http: urlencoded parser ignores body length, absorbs pipelined requests

fluent/fluent-bit#12650 · opened

on Oct 25, 2026

1

http: heap out-of-bounds read in chunked parser on a split read

fluent/fluent-bit#12649 · opened

on Oct 25, 2026

http server: chunk extensions rejected, connection closed with no response

fluent/fluent-bit#12648 · opened

on Oct 25, 2026

out_azure_blob: append is sent without the SAS signature after the blob is created (regression since 3.0.7)

fluent/fluent-bit#12636 · opened

on Oct 22, 2026

in_tail: deleted (archived) file is purged at the next rotate_wait timer tick, silently losing its unread tail

fluent/fluent-bit#12631 · opened

on Oct 22, 2026

1

Records flushed by in_tail's multiline at shutdown skip all filters (or are lost with memory storage)

fluent/fluent-bit#12628 · opened

on Oct 21, 2026

Fluentbit breaking changes since 5.0.5 - 5.1.4 Retain_Metadata_In_Forward_Mode default set to true

fluent/fluent-bit#12621 · opened

on Oct 21, 2026

4

Provide yaml configuration files for new installs

fluent/fluent-bit#12592 · opened

on Oct 16, 2026

syslog-rfc5424 parser not matching events with empty "message"

fluent/fluent-bit#12583 · opened

on Oct 15, 2026

`tls Off` is ignored; AWS credential providers force `use_tls` to true, so a plain-HTTP endpoint cannot be used

fluent/fluent-bit#12577 · opened

on Oct 14, 2026

Fluent Bit 5.1.3: Accumulated DLQ chunks exhaust storage.max_chunks_up and block the OTLP output pipeline

fluent/fluent-bit#12574 · opened

on Oct 13, 2026

1

Problematic dependency of fluent-bit-5.1.3 rpm on libpq.so.private16-5

fluent/fluent-bit#12573 · opened

on Oct 13, 2026

in_prometheus_textfile: one scrape is split across chunks, prometheus_exporter only serves the last one

fluent/fluent-bit#12557 · opened

on Oct 12, 2026

1

Expect filter print whole message exposing confidential information

fluent/fluent-bit#12556 · opened

on Oct 12, 2026

1

Expect filter check only first condition for a log

fluent/fluent-bit#12555 · opened

on Oct 12, 2026

1

Blob input crashes when using path globing "<root_folder>/**/*"

fluent/fluent-bit#12554 · opened

on Oct 12, 2026

1

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Issues

http: more than 50 unknown headers closes the connection with no response

http: most parse errors close the connection with no response (only bad-method returns 400)

http: empty Host header closes the connection with no response

http: Transfer-Encoding chunked plus Content-Length hangs forever (CL branch shadows the chunked path)

in_http: Connection: close is parsed but never acted on, connection idles to the 10s timeout

http server ignores Expect: 100-continue, clients stall until their own timeout

in_http: leftover pipelined data is never re-parsed after a request is consumed

http: body length is the remaining buffer, not Content-Length (breaks pipelining and corrupts bodies)

in_http: JSON array of scalars returns 201 but is silently dropped

in_http: urlencoded parser ignores body length, absorbs pipelined requests

http: heap out-of-bounds read in chunked parser on a split read

http server: chunk extensions rejected, connection closed with no response

out_azure_blob: append is sent without the SAS signature after the blob is created (regression since 3.0.7)

in_tail: deleted (archived) file is purged at the next rotate_wait timer tick, silently losing its unread tail

Records flushed by in_tail's multiline at shutdown skip all filters (or are lost with memory storage)

Fluentbit breaking changes since 5.0.5 - 5.1.4 Retain_Metadata_In_Forward_Mode default set to true

Provide yaml configuration files for new installs

syslog-rfc5424 parser not matching events with empty "message"

`tls Off` is ignored; AWS credential providers force `use_tls` to true, so a plain-HTTP endpoint cannot be used

Fluent Bit 5.1.3: Accumulated DLQ chunks exhaust storage.max_chunks_up and block the OTLP output pipeline

Problematic dependency of fluent-bit-5.1.3 rpm on libpq.so.private16-5

in_prometheus_textfile: one scrape is split across chunks, prometheus_exporter only serves the last one

Expect filter print whole message exposing confidential information

Expect filter check only first condition for a log

Blob input crashes when using path globing "<root_folder>/**/*"