UBUNTU-CVE-2026-42154

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Source
https://ubuntu.com/security/CVE-2026-42154
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-42154
Upstream
Published
2026-05-04T19:16:00Z
Modified
2026-07-02T18:01:16Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.

References

Affected packages

Ubuntu:16.04:LTS
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.14.0+ds-1
0.16.2+ds-1
0.16.2+ds-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "prometheus",
            "binary_version": "0.16.2+ds-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"
Ubuntu:18.04:LTS
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.7.1+ds-1
1.8.1+ds-2
2.*
2.1.0+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "prometheus",
            "binary_version": "2.1.0+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"
Ubuntu:20.04:LTS
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.7.1+ds-3
2.15.2+ds-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "prometheus",
            "binary_version": "2.15.2+ds-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"
Ubuntu:25.10
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.53.3+ds1-1
2.53.3+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-prometheus-prometheus-dev",
            "binary_version": "2.53.3+ds1-2"
        },
        {
            "binary_name": "prometheus",
            "binary_version": "2.53.3+ds1-2"
        },
        {
            "binary_name": "promtool",
            "binary_version": "2.53.3+ds1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"
Ubuntu:Pro:22.04:LTS
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

2.*
2.24.1+ds-1ubuntu1
2.24.1+ds-1ubuntu2
2.31.1+ds2-2
2.31.2+ds1-1
2.31.2+ds1-1ubuntu1
2.31.2+ds1-1ubuntu1.22.04.1
2.31.2+ds1-1ubuntu1.22.04.2
2.31.2+ds1-1ubuntu1.22.04.3
2.31.2+ds1-1ubuntu1.22.04.3+esm1
2.31.2+ds1-1ubuntu1.22.04.3+esm2
2.31.2+ds1-1ubuntu1.22.04.3+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "prometheus",
            "binary_version": "2.31.2+ds1-1ubuntu1.22.04.3+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"
Ubuntu:Pro:24.04:LTS
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

2.*
2.45.0+ds-3build1
2.45.1+ds-1
2.45.1+ds-2
2.45.1+ds-3
2.45.3+ds-2
2.45.3+ds-2build1
2.45.3+ds-2ubuntu0.1
2.45.3+ds-2ubuntu0.2
2.45.3+ds-2ubuntu0.2+esm1
2.45.3+ds-2ubuntu0.2+esm2
2.45.3+ds-2ubuntu0.3
2.45.3+ds-2ubuntu0.3+esm1
2.45.3+ds-2ubuntu0.3+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "prometheus",
            "binary_version": "2.45.3+ds-2ubuntu0.3+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"
Ubuntu:Pro:26.04:LTS
prometheus

Package

Name
prometheus
Purl
pkg:deb/ubuntu/prometheus?arch=source&distro=esm-apps%2Fresolute

Affected ranges

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

Affected versions

2.*
2.53.3+ds1-2
2.53.5+ds1-2
2.53.5+ds1-3
2.53.5+ds1-3ubuntu0.26.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-prometheus-prometheus-dev",
            "binary_version": "2.53.5+ds1-3ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "prometheus",
            "binary_version": "2.53.5+ds1-3ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "promtool",
            "binary_version": "2.53.5+ds1-3ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42154.json"