DEBIAN-CVE-2026-84971

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Source
https://security-tracker.debian.org/tracker/CVE-2026-84971
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84971.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-84971
Upstream
Published
2026-09-03T15:17:36Z
Modified
2026-09-18T08:47:35Z
Severity
  • 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
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

Debian:12 / libmongocrypt

Package

Name
libmongocrypt
Purl
pkg:deb/debian/libmongocrypt?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.7.2-1
1.8.2-1
1.8.4-1
1.9.1-1
1.10.0-1
1.10.1-1
1.11.0-1
1.12.0-1
1.13.0-1
1.13.1-1
1.13.2-1
1.16.0-1
1.17.0-1
1.17.3-1
1.18.1-1
1.18.2-1
1.19.0-1
1.19.1-1
1.20.0-1
1.20.1-1
1.20.2-1
1.20.3-1
1.20.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84971.json"

Debian:13 / libmongocrypt

Package

Name
libmongocrypt
Purl
pkg:deb/debian/libmongocrypt?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.13.2-1
1.13.2-1+deb13u1
1.16.0-1
1.17.0-1
1.17.3-1
1.18.1-1
1.18.2-1
1.19.0-1
1.19.1-1
1.20.0-1
1.20.1-1
1.20.2-1
1.20.3-1
1.20.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84971.json"

Debian:14 / libmongocrypt

Package

Name
libmongocrypt
Purl
pkg:deb/debian/libmongocrypt?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.20.4-1

Affected versions

1.*
1.13.2-1
1.16.0-1
1.17.0-1
1.17.3-1
1.18.1-1
1.18.2-1
1.19.0-1
1.19.1-1
1.20.0-1
1.20.1-1
1.20.2-1
1.20.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84971.json"