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CVE-2026-31967

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, the value of the mate reference id field was not validated. Later use of this value, for example when converting the data to SAM format, could result in the out of bounds array reads when looking up the corresponding reference name. If the array value obtained also happened to be a v
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ac719b9639a1400fb607e16ba3685d56d2154bbc4e5bef46ba238d72fa6584cc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-129","description":"CWE-129: Improper Validation of Array Index","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"htslib","vendor":"samtools","versions":[{"status":"affected","version":"< 1.21.1"},{"status":"affected","version":">= 1.22, < 1.22.2"},{"status":"affected","version":"= 1.23"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-129","description":"CWE-129: Improper Validation of Array Index","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/samtools/htslib/commit/9cefb46453ad471e933b8212d4f45920524d3357","tags":["x_refsource_MISC"],"url":"https://github.com/samtools/htslib/commit/9cefb46453ad471e933b8212d4f45920524d3357"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/references/1
{"name":"https://github.com/samtools/htslib/security/advisories/GHSA-33x5-c6vj-8f2w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/samtools/htslib/security/advisories/GHSA-33x5-c6vj-8f2w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2fa862d6aa50f234ba029147a90ccb7398f4c5f2c0d2b798a6d97f080c6e905 · sha256:d7de7ca8aea755be… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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