Description

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data. In the `cram_decode_slice()` function called while reading CRAM records, validation of the reference id field occurred too late, allowing two out of bounds reads to occur before the invalid data was detected. The bug does allow two values to be leaked to the caller, however as the function reports an error it may be difficult to exploit them. It is also possible that the program will crash due to trying to access invalid memory. Versions 1.23.1, 1.22.2 and 1.21.1 include fixes for this issue. There is no workaround for this issue.

INFO

Published Date :

2026-03-18T18:50:37.333Z

Last Modified :

2026-03-19T14:52:36.357Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-31965 vulnerability.

Vendors Products
Htslib
  • Htslib
Samtools
  • Htslib

CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact