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CVE-2026-31965

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 p
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8fd3e290c00a91b7f5e6979567c94096bfd8aaf1ea5c7faecb3965b5ad23b559
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-129","description":"CWE-129: Improper Validation of Array Index","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /containers/cna/problemTypes/1/descriptions/0

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /containers/cna/problemTypes/0/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:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /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:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"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:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /containers/cna/problemTypes/0/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:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /containers/cna/references/1
{"name":"https://github.com/samtools/htslib/security/advisories/GHSA-mqm2-v645-3qhr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/samtools/htslib/security/advisories/GHSA-mqm2-v645-3qhr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f9486717a700348c715127be686f5e4fa73aac38fa4822e3ee8b454d9f3b4170 · sha256:d6aa08442425fe0d… · /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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