UBUNTU-CVE-2026-2968

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Source
https://ubuntu.com/security/CVE-2026-2968
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2968.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-2968
Upstream
Published
2026-02-23T04:16:00Z
Modified
2026-02-27T09:58:16Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • 2.9 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was detected in Cesanta Mongoose up to 7.20. This impacts the function mgchacha20poly1305decrypt of the file /src/tlschacha20.c of the component Poly1305 Authentication Tag Handler. The manipulation results in improper verification of cryptographic signature. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is said to be difficult. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

References

Affected packages

Ubuntu:22.04:LTS / swupdate

Package

Name
swupdate
Purl
pkg:deb/ubuntu/swupdate@2021.11-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2020.*
2020.11-2
2021.*
2021.04-1.1
2021.04-2
2021.04-2build1
2021.11-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2021.11-1",
            "binary_name": "libswupdate-dev"
        },
        {
            "binary_version": "2021.11-1",
            "binary_name": "libswupdate0.1"
        },
        {
            "binary_version": "2021.11-1",
            "binary_name": "lua-swupdate"
        },
        {
            "binary_version": "2021.11-1",
            "binary_name": "swupdate"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2968.json"

Ubuntu:24.04:LTS / swupdate

Package

Name
swupdate
Purl
pkg:deb/ubuntu/swupdate@2023.12.1+dfsg-1ubuntu5?arch=source&distro=noble

Affected ranges

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

Affected versions

2023.*
2023.05+dfsg-3
2023.05+dfsg-4
2023.05+dfsg-4build1
2023.05+dfsg-5
2023.12+dfsg-1
2023.12.1+dfsg-1ubuntu1
2023.12.1+dfsg-1ubuntu4
2023.12.1+dfsg-1ubuntu5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2023.12.1+dfsg-1ubuntu5",
            "binary_name": "libswupdate-dev"
        },
        {
            "binary_version": "2023.12.1+dfsg-1ubuntu5",
            "binary_name": "libswupdate0.1"
        },
        {
            "binary_version": "2023.12.1+dfsg-1ubuntu5",
            "binary_name": "lua-swupdate"
        },
        {
            "binary_version": "2023.12.1+dfsg-1ubuntu5",
            "binary_name": "swupdate"
        },
        {
            "binary_version": "2023.12.1+dfsg-1ubuntu5",
            "binary_name": "swupdate-www"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2968.json"

Ubuntu:25.10 / swupdate

Package

Name
swupdate
Purl
pkg:deb/ubuntu/swupdate@2025.05+dfsg-2ubuntu1?arch=source&distro=questing

Affected ranges

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

Affected versions

2024.*
2024.12.1+dfsg-1build2
2024.12.1+dfsg-2
2024.12.1+dfsg-3
2025.*
2025.05+dfsg-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2025.05+dfsg-2ubuntu1",
            "binary_name": "libswupdate-dev"
        },
        {
            "binary_version": "2025.05+dfsg-2ubuntu1",
            "binary_name": "libswupdate0.1"
        },
        {
            "binary_version": "2025.05+dfsg-2ubuntu1",
            "binary_name": "lua-swupdate"
        },
        {
            "binary_version": "2025.05+dfsg-2ubuntu1",
            "binary_name": "swupdate"
        },
        {
            "binary_version": "2025.05+dfsg-2ubuntu1",
            "binary_name": "swupdate-www"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2968.json"