UBUNTU-CVE-2026-84971

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Source
https://ubuntu.com/security/CVE-2026-84971
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84971.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-84971
Upstream
  • CVE-2026-84971
Published
2026-09-04T00:00:00Z
Modified
2026-09-05T06:15:42.577284434Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Improper handling of an unexpected value size in the decryption path of a client-side encryption library can cause a failed internal check that terminates the process using the library. A party able to place a suitably formed encrypted value where an application will decrypt it, or able to control the responses the application receives, may cause that application to stop running.

References

Affected packages

Ubuntu:22.04:LTS / libmongocrypt

Package

Name
libmongocrypt
Purl
pkg:deb/ubuntu/libmongocrypt?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.1-1
1.2.2-1
1.3.0-1
1.3.0-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.0-1ubuntu1",
            "binary_name": "libmongocrypt0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84971.json"

Ubuntu:24.04:LTS / libmongocrypt

Package

Name
libmongocrypt
Purl
pkg:deb/ubuntu/libmongocrypt?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.7.2-1
1.8.2-1
1.8.4-1
1.8.4-1build2
1.8.4-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libmongocrypt0",
            "binary_version": "1.8.4-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84971.json"

Ubuntu:26.04:LTS / libmongocrypt

Package

Name
libmongocrypt
Purl
pkg:deb/ubuntu/libmongocrypt?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.13.2-1
1.17.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libmongocrypt0",
            "binary_version": "1.17.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84971.json"