CVE-2020-11059: In AEgir greater than or equal to 21.7.0 and less than 21.10.1, aegir publish and aegir build may leak secrets

Q: How do I fix CVE-2020-11059?

aegir: upgrade to 21.10.1. Exact commands for each OS are on this page.

Q: Is CVE-2020-11059 being exploited?

CVE-2020-11059 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-11059 affect?

CVE-2020-11059 affects aegir. Severity is critical (CVSS 9.6). In AEgir greater than or equal to 21.7.0 and less than 21.10.1, aegir publish and aegir build may leak secrets from environment variables in the browser bundle published to npm. This has been fixed in 21.10.1.

Q: How urgent is CVE-2020-11059?

Priority 50/100. Critical severity

This month

CRITICAL 9.6UPGRADE

CVE-2020-11059 is a critical-severity flaw (CVSS 9.6) affecting aegir. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In AEgir greater than or equal to 21.7.0 and less than 21.10.1, aegir publish and aegir build may leak secrets from environment variables in the browser bundle published to npm. This has been fixed in 21.10.1.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-200
Published	2020-05-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: aegir project

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

Am I affected?

Timeline

2020-05-27 21:15 UTCPublished CVE record published
2026-06-17 02:48 UTCUpdated Record last modified

aegir project aegir UPGRADE

Affected: >= 21.7.0 and < 21.10.1

Fixed in: 21.10.1

Safe to downgrade to: a release before 21.7.0

1. Check installed version

npm ls aegir

2. UPGRADE to 21.10.1

npm install aegir@">=21.10.1"

3. If no update is available yet, DOWNGRADE to a release before 21.7.0

npm view aegir versions npm install aegir@"<21.7.0"

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-2020-11059?

aegir: upgrade to 21.10.1. Exact commands for each OS are on this page.

Is CVE-2020-11059 being exploited?

CVE-2020-11059 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-2020-11059 affect?

CVE-2020-11059 affects aegir. Severity is critical (CVSS 9.6). In AEgir greater than or equal to 21.7.0 and less than 21.10.1, aegir publish and aegir build may leak secrets from environment variables in the browser bundle published to npm. This has been fixed in 21.10.1.

How urgent is CVE-2020-11059?

Priority 50/100. Critical severity

References

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