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CVE-2026-21869

🗓️ 07 Jan 2026 23:37:59Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 75 Views🌐 WEB

CVE-2026-21869: llama.cpp accepts negative n_discard from JSON, causing out-of-bounds writes.

Related
Detection
Affected
Refs
Paths
Social
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-21869
7 Jan 202623:37
–alpinelinux
circl
Circl
CVE-2026-21869
8 Jan 202601:03
–circl
cnnvd
CNNVD
llama.cpp Buffer Error Vulnerability
8 Jan 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-21869 llama.cpp has Out-of-bounds Write in llama-server
7 Jan 202623:37
–cvelist
debiancve
Debian CVE
CVE-2026-21869
7 Jan 202623:37
–debiancve
mend
Mend
CVE-2026-21869
7 Jan 202623:37
–mend
nvd
NVD
CVE-2026-21869
8 Jan 202600:16
–nvd
opensuse
OPENSUSE Linux
ggml-devel-9500-1.1 on GA media (moderate)
9 Jun 202600:00
–opensuse
osv_cve
osv_cve
CVE-2026-21869 llama.cpp has Out-of-bounds Write in llama-server
7 Jan 202623:37
–osv_cve
osv_debian
osv_debian
DEBIAN-CVE-2026-21869
8 Jan 202600:16
–osv_debian
Rows per page
NVD
Node
[
  {
    "vendor": "ggml-org",
    "product": "llama.cpp",
    "versions": [
      {
        "version": "<= 55d4206c8",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
n_discardrequest body/completionThe n_discard parameter in the JSON input of the /completion endpoint is parsed without validation, allowing negative values that lead to out-of-bounds memory writes.CWE-787

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