OSV-2026-534

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Import Source
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/htslib/OSV-2026-534.yaml
JSON Data
https://api.osv.dev/v1/vulns/OSV-2026-534
Published
2026-04-05T00:10:00Z
Modified
2026-04-05T00:10:00Z
Summary
Heap-buffer-overflow in cram_encode_container
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=499447432

Crash type: Heap-buffer-overflow READ 1
Crash state:
cram_encode_container
cram_flush_container_mt
cram_close
References

Affected packages

OSS-Fuzz / htslib

Package

Name
htslib
Purl
pkg:generic/htslib

Affected ranges

Type
GIT
Repo
https://github.com/samtools/htslib.git
Events
Introduced
7f7e830cf106dbdb6390fbb53fbd5af88eec82f2
Fixed
52981170b31d92c1450220bd5941f355844de706

Ecosystem specific 

{
    "severity": "MEDIUM"
}

Database specific

introduced_range 
"b13f80a87398767a55c6da28601ff0cff3500a66:bf93316d3575eb623a72d84ec67cc5b8ce2d1448"
source 
"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/htslib/OSV-2026-534.yaml"