Skip to main content
Threat Radar animated logo
EPSS 0.4%top 68%

Security fixes in prometheus 3.5.3-r4 (CVE-2026-42505)

0
Medium
VulnerabilityCVE-2026-42505gcveosvubuntu-cve-2026-42505ubuntu-14-04-ltsubuntu-16-04-ltsubuntu-pro-16-04-ltsubuntu-18-04-ltsubuntu-pro-18-04-ltsubuntu-20-04-ltsubuntu-pro-20-04-ltsubuntu-22-04-ltsubuntu-pro-22-04-ltsubuntu-24-04-ltsubuntu-25-10ubuntu-26-04-ltscleanstart-2026-rb42183cve-2026-42505alpinecleanstart-2026-lo17389cleanstart-2026-fl53031cleanstart
Published: 07/30/2026 (07/30/2026, 07:10:53 UTC)
Source: GCVE Database
Product: prometheus

Description

Prometheus versions prior to 3.5.3-r4 contain two vulnerabilities identified as CVE-2026-42505 and CVE-2026-39822. These vulnerabilities have been addressed in the prometheus 3.5.3-r4 package update. The severity of CVE-2026-42505 is assessed as medium. Multiple Ubuntu package versions of prometheus are affected. A patch is available to remediate these issues.

Affected software

Ubuntu:14.04:LTSmore threats →ghsa
golang-1.10
pkg:deb/ubuntu/[email protected]~14.04.1?arch=source&distro=trusty
Affected versions
=1.10.4-2ubuntu1~14.04.1
Ubuntu:16.04:LTSmore threats →ghsa
golang-1.10
pkg:deb/ubuntu/[email protected]~16.04.2?arch=source&distro=xenial
Affected versions
=1.10.4-2ubuntu1~16.04.1=1.10.4-2ubuntu1~16.04.2
Ubuntu:16.04:LTSmore threats →ghsa
golang-1.6
pkg:deb/ubuntu/[email protected]~16.04.4?arch=source&distro=xenial
Affected versions
=1.6-0ubuntu1=1.6-0ubuntu2=1.6-0ubuntu3=1.6-0ubuntu4=1.6-0ubuntu5=1.6.1-0ubuntu1=1.6.2-0ubuntu5~16.04=1.6.2-0ubuntu5~16.04.2=1.6.2-0ubuntu5~16.04.3=1.6.2-0ubuntu5~16.04.4
Ubuntu:Pro:16.04:LTSmore threats →ghsa
golang-1.13
pkg:deb/ubuntu/[email protected]~16.04.3+esm3?arch=source&distro=esm-apps/xenial
Affected versions
=1.13.8-1ubuntu1~16.04.2=1.13.8-1ubuntu1~16.04.3=1.13.8-1ubuntu1~16.04.3+esm2=1.13.8-1ubuntu1~16.04.3+esm3
Ubuntu:Pro:16.04:LTSmore threats →ghsa
golang-1.18
pkg:deb/ubuntu/[email protected]~16.04.6+esm1?arch=source&distro=esm-apps/xenial
Affected versions
=1.18.1-1ubuntu1~16.04.6=1.18.1-1ubuntu1~16.04.6+esm1
Ubuntu:18.04:LTSmore threats →ghsa
golang-1.10
pkg:deb/ubuntu/[email protected]~18.04.2?arch=source&distro=bionic
Affected versions
=1.10~rc1-1=1.10~rc1-1ubuntu1=1.10~rc1-2ubuntu1=1.10~rc2-1ubuntu1=1.10-1ubuntu1=1.10.1-1ubuntu2=1.10.4-2ubuntu1~18.04.1=1.10.4-2ubuntu1~18.04.2
Ubuntu:Pro:18.04:LTSmore threats →ghsa
golang-1.13
pkg:deb/ubuntu/[email protected]~18.04.4+esm1?arch=source&distro=esm-apps/bionic
Affected versions
=1.13.8-1ubuntu1~18.04.2=1.13.8-1ubuntu1~18.04.3=1.13.8-1ubuntu1~18.04.4=1.13.8-1ubuntu1~18.04.4+esm1
Ubuntu:Pro:18.04:LTSmore threats →ghsa
golang-1.16
pkg:deb/ubuntu/[email protected]~18.04.2+esm1?arch=source&distro=esm-apps/bionic
Affected versions
=1.16.2-0ubuntu1~18.04.2=1.16.2-0ubuntu1~18.04.2+esm1
Ubuntu:Pro:18.04:LTSmore threats →ghsa
golang-1.18
pkg:deb/ubuntu/[email protected]~18.04.4+esm1?arch=source&distro=esm-apps/bionic
Affected versions
=1.18.1-1ubuntu1~18.04.3=1.18.1-1ubuntu1~18.04.4=1.18.1-1ubuntu1~18.04.4+esm1
Ubuntu:18.04:LTSmore threats →ghsa
golang-1.8
pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic
Affected versions
=1.8.3-2ubuntu1=1.8.3-2ubuntu1.18.04.1
Ubuntu:18.04:LTSmore threats →ghsa
golang-1.9
pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic
Affected versions
=1.9.1-2ubuntu1=1.9.2-1ubuntu1=1.9.2-3ubuntu1=1.9.3-1ubuntu1=1.9.4-1ubuntu1
Ubuntu:20.04:LTSmore threats →ghsa
golang-1.13
pkg:deb/ubuntu/[email protected]?arch=source&distro=focal
Affected versions
=1.13.1-1ubuntu1=1.13.3-1ubuntu1=1.13.4-1ubuntu1=1.13.5-1ubuntu1=1.13.6-1ubuntu1=1.13.6-2ubuntu1=1.13.7-1ubuntu1=1.13.8-1ubuntu1=1.13.8-1ubuntu1.1=1.13.8-1ubuntu1.2
Ubuntu:20.04:LTSmore threats →ghsa
golang-1.14
pkg:deb/ubuntu/[email protected]~20.04.2?arch=source&distro=focal
Affected versions
=1.14~beta1-1=1.14~beta1-2=1.14~rc1-1=1.14-1=1.14.1-1=1.14.2-1=1.14.2-1ubuntu1=1.14.3-2ubuntu2~20.04.1=1.14.3-2ubuntu2~20.04.2
Ubuntu:Pro:20.04:LTSmore threats →ghsa
golang-1.16
pkg:deb/ubuntu/[email protected]~20.04.1+esm1?arch=source&distro=esm-apps/focal
Affected versions
=1.16.2-0ubuntu1~20.04=1.16.2-0ubuntu1~20.04.1=1.16.2-0ubuntu1~20.04.1+esm1
Ubuntu:20.04:LTSmore threats →ghsa
golang-1.18
pkg:deb/ubuntu/[email protected]~20.04.3?arch=source&distro=focal
Affected versions
=1.18.1-1ubuntu1~20.04.1=1.18.1-1ubuntu1~20.04.2=1.18.1-1ubuntu1~20.04.3
Ubuntu:20.04:LTSmore threats →ghsa
golang-1.20
pkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focal
Affected versions
=1.20.3-1ubuntu0.1~20.04=1.20.3-1ubuntu0.1~20.04.1
Ubuntu:20.04:LTSmore threats →ghsa
golang-1.21
pkg:deb/ubuntu/[email protected]~ubuntu20.04.3?arch=source&distro=focal
Affected versions
=1.21.1-1~ubuntu20.04.1=1.21.1-1~ubuntu20.04.2=1.21.1-1~ubuntu20.04.3
Ubuntu:20.04:LTSmore threats →ghsa
golang-1.22
pkg:deb/ubuntu/[email protected]~20.04.2?arch=source&distro=focal
Affected versions
=1.22.2-2~20.04.1=1.22.2-2~20.04.2
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.17
pkg:deb/ubuntu/[email protected]?arch=source&distro=jammy
Affected versions
=1.17-1ubuntu2=1.17.3-1ubuntu1=1.17.3-1ubuntu2=1.17.13-3ubuntu1=1.17.13-3ubuntu1.2=1.17.13-3ubuntu1.3
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.18
pkg:deb/ubuntu/[email protected]?arch=source&distro=jammy
Affected versions
=1.18~beta1-0ubuntu1=1.18~beta2-1ubuntu1=1.18~beta2-1ubuntu2=1.18~rc1-1ubuntu1=1.18-1ubuntu1=1.18.1-1ubuntu1=1.18.1-1ubuntu1.1=1.18.1-1ubuntu1.2
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.20
pkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammy
Affected versions
=1.20.3-1ubuntu0.1~22.04=1.20.3-1ubuntu0.1~22.04.1
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.21
pkg:deb/ubuntu/[email protected]~ubuntu22.04.3?arch=source&distro=jammy
Affected versions
=1.21.1-1~ubuntu22.04.1=1.21.1-1~ubuntu22.04.2=1.21.1-1~ubuntu22.04.3
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.22
pkg:deb/ubuntu/[email protected]~22.04.3?arch=source&distro=jammy
Affected versions
=1.22.2-2~22.04=1.22.2-2~22.04.1=1.22.2-2~22.04.2=1.22.2-2~22.04.3
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.23
pkg:deb/ubuntu/[email protected]~22.04.2?arch=source&distro=jammy
Affected versions
=1.23.1-1~22.04=1.23.1-1~22.04.2
Ubuntu:22.04:LTSmore threats →ghsa
golang-1.24
pkg:deb/ubuntu/[email protected]~22.04.2?arch=source&distro=jammy
Affected versions
=1.24.4-1ubuntu1~22.04.1=1.24.4-1ubuntu1~22.04.2
Ubuntu:Pro:22.04:LTSmore threats →ghsa
golang-1.13
pkg:deb/ubuntu/[email protected]?arch=source&distro=esm-apps/jammy
Affected versions
=1.13.8-1ubuntu2=1.13.8-1ubuntu2.22.04.1=1.13.8-1ubuntu2.22.04.1+esm1=1.13.8-1ubuntu2.22.04.2
Ubuntu:24.04:LTSmore threats →ghsa
golang-1.21
pkg:deb/ubuntu/[email protected]?arch=source&distro=noble
Affected versions
=1.21.1-1=1.21.3-1=1.21.4-1=1.21.5-1=1.21.6-1=1.21.7-1=1.21.7-2=1.21.8-1=1.21.8-1build1=1.21.9-1=1.21.9-1ubuntu0.1
Ubuntu:24.04:LTSmore threats →ghsa
golang-1.22
pkg:deb/ubuntu/[email protected]?arch=source&distro=noble
Affected versions
=1.22~rc1-2=1.22.0-1=1.22.0-2=1.22.1-1=1.22.1-1build1=1.22.2-2=1.22.2-2ubuntu0.1=1.22.2-2ubuntu0.2=1.22.2-2ubuntu0.3=1.22.2-2ubuntu0.4
Ubuntu:24.04:LTSmore threats →ghsa
golang-1.23
pkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noble
Affected versions
=1.23.1-1~24.04=1.23.1-1~24.04.1
Ubuntu:24.04:LTSmore threats →ghsa
golang-1.24
pkg:deb/ubuntu/[email protected]~24.04.2?arch=source&distro=noble
Affected versions
=1.24.4-1ubuntu1~24.04.1=1.24.4-1ubuntu1~24.04.2
Ubuntu:25.10more threats →ghsa
golang-1.23
pkg:deb/ubuntu/[email protected]?arch=source&distro=questing
Affected versions
=1.23.8-1=1.23.10-1=1.23.10-1ubuntu0.2
Ubuntu:25.10more threats →ghsa
golang-1.24
pkg:deb/ubuntu/[email protected]?arch=source&distro=questing
Affected versions
=1.24.2-1=1.24.2-2=1.24.4-1=1.24.4-1ubuntu1
Ubuntu:25.10more threats →ghsa
golang-1.25
pkg:deb/ubuntu/[email protected]~25.10.1?arch=source&distro=questing
Affected versions
=1.25.0-0ubuntu1=1.25.7-2~25.10.1
Ubuntu:26.04:LTSmore threats →ghsa
golang-1.23
pkg:deb/ubuntu/[email protected]?arch=source&distro=resolute
Affected versions
=1.23.10-1
Ubuntu:26.04:LTSmore threats →ghsa
golang-1.24
pkg:deb/ubuntu/[email protected]?arch=source&distro=resolute
Affected versions
=1.24.4-1ubuntu1=1.24.9-1=1.24.13-2
Ubuntu:26.04:LTSmore threats →ghsa
golang-1.25
pkg:deb/ubuntu/[email protected]?arch=source&distro=resolute
Affected versions
=1.25.0-0ubuntu1=1.25.7-2

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/09/2026, 15:11:10 UTC

Technical Analysis

The prometheus package versions prior to 3.5.3-r4 include two security vulnerabilities, including CVE-2026-42505. The update to prometheus 3.5.3-r4 fixes these vulnerabilities. The affected versions include numerous Ubuntu-specific builds ranging from 1.6 through 1.25.7-2 and others as listed. No detailed technical exploit or impact information is provided beyond the existence of these vulnerabilities and their resolution in the specified patched version.

Potential Impact

The vulnerabilities present in prometheus versions before 3.5.3-r4 pose a medium severity risk. Specific impacts are not detailed in the provided data. No known exploits in the wild have been reported. The vulnerabilities could potentially affect systems running the affected prometheus versions on various Ubuntu LTS and Pro releases.

Mitigation Recommendations

Upgrade prometheus to version 3.5.3-r4 or later to address CVE-2026-42505 and the related vulnerability CVE-2026-39822. Since a patch is available, applying this official fix is the recommended remediation. No additional vendor advisory information contradicts this guidance.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-42505
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:14.04:LTS","Ubuntu:16.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6a58b4c668715ace43daac29

Added to database: 07/16/2026, 10:39:02 UTC

Last enriched: 09/09/2026, 15:11:10 UTC

Last updated: 09/14/2026, 22:01:34 UTC

Views: 31

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses