CVE-2026-31971

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the BYTEARRAYLEN method, the crambytearraylendecode failed to validat...

EUVD-2026-12948

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the BYTEARRAYLEN method, the crambytearraylendecode failed to validat...

CVE-2026-31971 HTSlib CRAM decoder vulnerable to buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the BYTEARRAYLEN method, the crambytearraylendecode failed to validat...

CVE-2026-31970 HTSlib BGZF index file reader has a heap buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. GZI files are used to index block-compressed GZIP BGZF files. In the GZI loading function, bgzfindexloadhfile, it was possible to trigger an integer overflow, leading to an under- or zero-sized buffer being allocated to stor...

CVE-2026-31970

HTSlib is a library for reading and writing bioinformatics file formats. GZI files are used to index block-compressed GZIP BGZF files. In the GZI loading function, bgzfindexloadhfile, it was possible to trigger an integer overflow, leading to an under- or zero-sized buffer being allocated to stor...

EUVD-2026-12946

HTSlib is a library for reading and writing bioinformatics file formats. GZI files are used to index block-compressed GZIP BGZF files. In the GZI loading function, bgzfindexloadhfile, it was possible to trigger an integer overflow, leading to an under- or zero-sized buffer being allocated to stor...

CVE-2026-31970

Summary: HTSlib’s GZI index loading path (bgzf_index_load_hfile) may overflow a heap buffer due to an integer overflow, causing a heap buffer overflow. This can crash the application, corrupt data, or potentially allow arbitrary code execution when a crafted GZI file is opened. Affected component...

CVE-2026-31970 HTSlib BGZF index file reader has a heap buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. GZI files are used to index block-compressed GZIP BGZF files. In the GZI loading function, bgzfindexloadhfile, it was possible to trigger an integer overflow, leading to an under- or zero-sized buffer being allocated to stor...

CVE-2026-31969 HTSlib CRAM decoder has a heap buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the BYTEARRAYSTOP method, an out-by-one error in the...

CVE-2026-31969 HTSlib CRAM decoder has a heap buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the BYTEARRAYSTOP method, an out-by-one error in the...

CVE-2026-31969

HTSlib CRAM decoding bug: a heap buffer overflow in cram_byte_array_stop_decode_char() when decoding BYTE_ARRAY_STOP can write an attacker-controlled byte past a heap allocation. This arises from an out-by-one check in the full output buffer. Consequence could be program crash, data/heap-structur...

CVE-2026-31969 HTSlib CRAM decoder has a heap buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. When reading data encoded using the BYTEARRAYSTOP method, an out-by-one error in the...

CVE-2026-31968 HTSlib CRAM decoder vulnerable to buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. For the VARINT and CONST encodings, incomplete validation of the context in which the encodings were...

CVE-2026-31968 HTSlib CRAM decoder vulnerable to buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. For the VARINT and CONST encodings, incomplete validation of the context in which the encodings were...

CVE-2026-31968

HTSlib CRAM decoder (CVE-2026-31968) has incomplete validation in the VARINT and CONST encodings, which can cause writes past heap allocations or a stack byte, potentially enabling heap or stack corruption and, in some streams, arbitrary code execution. Affected versions are 1.23.1, 1.22.2, and 1...

EUVD-2026-12942

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. For the VARINT and CONST encodings, incomplete validation of the context in which the encodings were...

CVE-2026-31968 HTSlib CRAM decoder vulnerable to buffer overflow

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data using a variety of encodings and compression methods. For the VARINT and CONST encodings, incomplete validation of the context in which the encodings were...

CVE-2026-31963

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data. As one method of removing redundant data, CRAM uses reference-based compression so that instead of storing the full sequence for each alignment record it...

CVE-2026-31963

HTSlib CRAM reader vulnerability (CVE-2026-31963) arises from an out-by-one error when decoding CRAM features that extend beyond the record boundary. This can write one attacker-controlled byte past the end of a heap buffer, causing a heap buffer overflow. The issue may crash the program, overwri...

CVE-2026-31963 HTSlib CRAM reader has heap buffer overflow due to improper validation of input

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data. As one method of removing redundant data, CRAM uses reference-based compression so that instead of storing the full sequence for each alignment record it...