CVE-2021-31926: AMP Application Deployment Service in CubeCoders AMP 2.1.x before 2.1.1.2 allows a remote, authenticated user

This month

MEDIUM 6.5UPGRADE

CVE-2021-31926 is a medium-severity flaw (CVSS 6.5) affecting amp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

AMP Application Deployment Service in CubeCoders AMP 2.1.x before 2.1.1.2 allows a remote, authenticated user to open ports in the local system firewall by crafting an HTTP(S) request directly to the applicable API endpoint (despite not having permission to make changes to the system's network configuration).

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-863
Published	2021-04-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cubecoders

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-04-30 20:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

cubecoders amp UPGRADE

Affected: >= 2.1.0 and < 2.1.1.2

Fixed in: 2.1.1.2

Safe to downgrade to: a release before 2.1.0

1. Check installed version

apt-cache policy amp || rpm -q amp || amp --version

2. UPGRADE to 2.1.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade amp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade amp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.1.0 (Debian / Ubuntu)

apt-cache madison amp sudo apt install amp=<VERSION_BEFORE_2.1.0> sudo apt-mark hold amp

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list amp sudo dnf downgrade amp-<VERSION_BEFORE_2.1.0> sudo dnf versionlock add amp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-31926?

amp: upgrade to 2.1.1.2. Exact commands for each OS are on this page.

Is CVE-2021-31926 being exploited?

CVE-2021-31926 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-31926 affect?

CVE-2021-31926 affects amp. Severity is medium (CVSS 6.5). AMP Application Deployment Service in CubeCoders AMP 2.1.x before 2.1.1.2 allows a remote, authenticated user to open ports in the local system firewall by crafting an HTTP(S) request directly to the applicable API endpoint (despite not hav

How urgent is CVE-2021-31926?

Priority 43/100. Public exploit reference

Related CVEs

CVE-2021-34539 HIGH 7.2 UPGRADE An issue was discovered in CubeCoders AMP before 2.1.1.8

References

← Back to latest CVEs