DEBIAN-CVE-2026-5246

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Source
https://security-tracker.debian.org/tracker/CVE-2026-5246
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5246.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-5246
Upstream
Published
2026-04-02T10:16:17Z
Modified
2026-09-14T17:03:17Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A vulnerability was determined in Cesanta Mongoose up to 7.20. Affected is the function mg_tls_verify_cert_signature of the file mongoose.c of the component P-384 Public Key Handler. Executing a manipulation can lead to authorization bypass. The attack can be executed remotely. Attacks of this nature are highly complex. The exploitability is told to be difficult. The exploit has been publicly disclosed and may be utilized. Upgrading to version 7.21 is able to address this issue. This patch is called 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

References

Affected packages

Debian:12 / swupdate

Package

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

Affected ranges

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

Affected versions

2022.*
2022.12+dfsg-4
2022.12+dfsg-4+deb12u1~bpo11+1
2022.12+dfsg-4+deb12u1
2022.12+dfsg-4+deb12u2
2023.*
2023.05+dfsg-1
2023.05+dfsg-2~bpo12+1
2023.05+dfsg-2
2023.05+dfsg-3
2023.05+dfsg-4
2023.05+dfsg-5~bpo12+1
2023.05+dfsg-5
2023.12+dfsg-1~bpo12+1
2023.12+dfsg-1
2023.12.1+dfsg-1~bpo12+1
2023.12.1+dfsg-1
2023.12.1+dfsg-2~bpo12+1
2023.12.1+dfsg-2
2024.*
2024.05+dfsg-1
2024.05.2+dfsg-1
2024.05.2+dfsg-2~bpo12+1
2024.05.2+dfsg-2
2024.12+dfsg-1
2024.12+dfsg-2~bpo12+1
2024.12+dfsg-2
2024.12.1+dfsg-1~bpo12+1
2024.12.1+dfsg-1
2024.12.1+dfsg-2
2024.12.1+dfsg-3~bpo12+1
2024.12.1+dfsg-3
2025.*
2025.05+dfsg-1
2025.05+dfsg-2~bpo13+1
2025.05+dfsg-2
2025.05+dfsg-3~bpo13+1
2025.05+dfsg-3
2025.12+dfsg-1
2025.12+dfsg-2~bpo13+1
2025.12+dfsg-2
2025.12+dfsg-3
2025.12+dfsg-4
2025.12+dfsg-5
2025.12+dfsg-6
2025.12+dfsg-7~bpo13+1
2025.12+dfsg-7
2025.12+dfsg-8
2025.12+dfsg-9
2025.12+dfsg-10~bpo13+1
2025.12+dfsg-10~bpo13+2
2025.12+dfsg-10
2026.*
2026.05+dfsg-1
2026.05+dfsg-2
2026.05+dfsg-3~bpo13+1
2026.05+dfsg-3
2026.05+dfsg-4
2026.05.1+dfsg-1~bpo13+1
2026.05.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5246.json"

Debian:13 / swupdate

Package

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

Affected ranges

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

Affected versions

2024.*
2024.12.1+dfsg-3
2024.12.1+dfsg-3+deb13u1
2024.12.1+dfsg-3+deb13u2
2025.*
2025.05+dfsg-1
2025.05+dfsg-2~bpo13+1
2025.05+dfsg-2
2025.05+dfsg-3~bpo13+1
2025.05+dfsg-3
2025.12+dfsg-1
2025.12+dfsg-2~bpo13+1
2025.12+dfsg-2
2025.12+dfsg-3
2025.12+dfsg-4
2025.12+dfsg-5
2025.12+dfsg-6
2025.12+dfsg-7~bpo13+1
2025.12+dfsg-7
2025.12+dfsg-8
2025.12+dfsg-9
2025.12+dfsg-10~bpo13+1
2025.12+dfsg-10~bpo13+2
2025.12+dfsg-10
2026.*
2026.05+dfsg-1
2026.05+dfsg-2
2026.05+dfsg-3~bpo13+1
2026.05+dfsg-3
2026.05+dfsg-4
2026.05.1+dfsg-1~bpo13+1
2026.05.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5246.json"

Debian:14 / swupdate

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2025.12+dfsg-10

Affected versions

2024.*
2024.12.1+dfsg-3
2025.*
2025.05+dfsg-1
2025.05+dfsg-2~bpo13+1
2025.05+dfsg-2
2025.05+dfsg-3~bpo13+1
2025.05+dfsg-3
2025.12+dfsg-1
2025.12+dfsg-2~bpo13+1
2025.12+dfsg-2
2025.12+dfsg-3
2025.12+dfsg-4
2025.12+dfsg-5
2025.12+dfsg-6
2025.12+dfsg-7~bpo13+1
2025.12+dfsg-7
2025.12+dfsg-8
2025.12+dfsg-9
2025.12+dfsg-10~bpo13+1
2025.12+dfsg-10~bpo13+2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5246.json"