CVE-2026-126049

Gwenhywfar 5.14.2 contains a heap use-after-free vulnerability in GWENTLVBufferToDB in src/parser/tlv.c, which frees a nested record's GWENDB node when parsing of its contents fails but continues processing and adds the freed node to the parent instead of returning. Attackers can supply a...

CVE-2026-126048

Gwenhywfar 4.99.8beta before 5.14.2 contains a stack-based buffer overflow in GWENTLVBufferToDB in src/parser/tlv.c when decoding BER-TLV tags into a fixed 128-byte buffer. Attackers can supply a record with about 127 or more tag continuation bytes or a truncated multi-byte tag, such as via a...

GHSA-J49H-6577-5XWQ gmrtd ReadFile Vulnerable to Denial of Service via Excessive TLV Length Values

Unbounded TLV length in ReadFile can cause Denial of Service Summary A Denial of Service vulnerability was identified in ReadFile where unbounded TLV length values could lead to excessive CPU and memory usage when processing data from a malicious or non-compliant NFC source. This issue has been...