CVE-2021-21979: In Bitnami Containers, all Laravel container versions prior to: 6.20.0-debian-10-r107 for Laravel 6, 7.30.1-de

This week

HIGH 7.3REMOTEWATCHLISTUPGRADE

CVE-2021-21979 is a high-severity flaw (CVSS 7.3) affecting containers. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Bitnami Containers, all Laravel container versions prior to: 6.20.0-debian-10-r107 for Laravel 6, 7.30.1-debian-10-r108 for Laravel 7 and 8.5.11-debian-10-r0 for Laravel 8, the file /tmp/app/.env is generated at the time that the docker image bitnami/laravel was built, and the value of APP_KEY is fixed under certain conditions. This value is crucial for the security of the application and must be randomly generated per Laravel installation. If

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-798
Published	2021-03-03
Last modified	2026-06-17

Publisher (CNA): VMware · Vendor: bitnami

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

Am I affected?

Timeline

2021-03-03 17:15 UTCPublished CVE record published
2026-06-17 03:36 UTCUpdated Record last modified

bitnami containers UPGRADE

Affected: >= 6.0.2-debian-9-r0 and <= 6.0.2-debian-9-r22 · >= 6.4.0-debian-9-r0 and <= 6.4.0-debian-9-r31 · >= 6.5.2-debian-9-r0 and <= 6.5.2-debian-9-r20 · >= 6.8.0-debian-9-r0 and <= 6.8.0-debian-9-r26 · >= 6.12.0-debian-9-r0 and <= 6.12.0-debian-10-r33 · >= 6.18.0-debian-10-r0 and <= 6.18.0-debian-10-r21 · >= 6.18.3-debian-10-r0 and <= 6.18.3-debian-10-r22 · >= 6.18.8-debian-10-r0 and <= 6.18.8-debian-10-r110

Fixed in: 6.20.0-debian-10-r107, 7.30.1-debian-10-r108

Safe to downgrade to: a release before 6.0.2-debian-9-r0

1. Check installed version

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

2. UPGRADE to 6.20.0-debian-10-r107 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade containers

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 6.0.2-debian-9-r0 (Debian / Ubuntu)

apt-cache madison containers sudo apt install containers=<VERSION_BEFORE_6.0.2-debian-9-r0> sudo apt-mark hold containers

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

dnf --showduplicates list containers sudo dnf downgrade containers-<VERSION_BEFORE_6.0.2-debian-9-r0> sudo dnf versionlock add containers

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-2021-21979?

containers: upgrade to 6.20.0-debian-10-r107, 7.30.1-debian-10-r108. Exact commands for each OS are on this page.

Is CVE-2021-21979 being exploited?

CVE-2021-21979 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-2021-21979 affect?

CVE-2021-21979 affects containers. Severity is high (CVSS 7.3). In Bitnami Containers, all Laravel container versions prior to: 6.20.0-debian-10-r107 for Laravel 6, 7.30.1-debian-10-r108 for Laravel 7 and 8.5.11-debian-10-r0 for Laravel 8, the file /tmp/app/.env is generated at the time that the docker

How urgent is CVE-2021-21979?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Laravel vulnerabilities · Docker vulnerabilities · Debian vulnerabilities

Related CVEs

CVE-2021-25907 CRITICAL 9.8 UPGRADE An issue was discovered in the containers crate before 0.9.11 for Rust

References

← Back to latest CVEs