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OSCORE option parser accepts trailing garbage, kid flag without data, and duplicate OSCORE options

Status: Open.

#2051 In obgm/libcoap;

· afldl opened on Jun 10, 2026

Proxy Observe-Cache Replayed Stale Content From A Dual-ETag Context

Status: Open.

#2046 In obgm/libcoap;

· LiD0209 opened on Jun 5, 2026

Build fails with OpenSSL 4

Status: Open.

#2045 In obgm/libcoap;

· raviksharma opened on Jun 4, 2026

ICMP Original Datagram Type/Code Vetting Is Only Partially Implemented

Status: Open.

#2004 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

Payload Legality Is Not Enforced By The Core PDU API

Status: Open.

#2001 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

ETag Opaque Value Is Collapsed By Integer Decoding

Status: Open.

#1997 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

Accept-Based Content Negotiation Is Application Specific

Status: Open.

#1991 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

Unrecognized Error Codes Are Not Globally Normalized

Status: Open.

#1987 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

Response Semantics Are Application-Owned

Status: Open.

#1986 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

2.03 Valid Cache Semantics Are Partially Implemented

Status: Open.

#1985 In obgm/libcoap;

· LiD0209 opened on May 7, 2026

Zephyr - failed to link mbedtls

Status: Open.

#1890 In obgm/libcoap;

· magdalenaszumny opened on Feb 17, 2026

Ideas to implement x509 PEM client certificate validation in real-time.

Status: Open.

#1801 In obgm/libcoap;

· elfarolab opened on Nov 17, 2025