CVE-2021-41077: The activation process in Travis CI, for certain 2021-09-03 through 2021-09-10 builds, causes secret data to h

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HIGH 7.5REMOTEUPGRADE

CVE-2021-41077 is a high-severity flaw (CVSS 7.5) affecting travis ci. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The activation process in Travis CI, for certain 2021-09-03 through 2021-09-10 builds, causes secret data to have unexpected sharing that is not specified by the customer-controlled .travis.yml file. In particular, the desired behavior (if .travis.yml has been created locally by a customer, and added to git) is for a Travis service to perform builds in a way that prevents public access to customer-specific secret environment data such as signing

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-862
Published	2021-09-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: travis-ci

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

Am I affected?

Timeline

2021-09-14 16:15 UTCPublished CVE record published
2026-06-17 04:07 UTCUpdated Record last modified

travis-ci travis ci UPGRADE

Affected: >= 2021-09-03 and <= 2021-09-10

Fixed in: newer than 2021-09-10

Safe to downgrade to: a release before 2021-09-03

1. Check installed version

apt-cache policy travis-ci || rpm -q travis-ci || travis-ci --version

2. UPGRADE to newer than 2021-09-10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade travis-ci

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade travis-ci

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 2021-09-03 (Debian / Ubuntu)

apt-cache madison travis-ci sudo apt install travis-ci=<VERSION_BEFORE_2021-09-03> sudo apt-mark hold travis-ci

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

dnf --showduplicates list travis-ci sudo dnf downgrade travis-ci-<VERSION_BEFORE_2021-09-03> sudo dnf versionlock add travis-ci

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-2021-41077?

travis ci: upgrade to newer than 2021-09-10. Exact commands for each OS are on this page.

Is CVE-2021-41077 being exploited?

CVE-2021-41077 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-2021-41077 affect?

CVE-2021-41077 affects travis ci. Severity is high (CVSS 7.5). The activation process in Travis CI, for certain 2021-09-03 through 2021-09-10 builds, causes secret data to have unexpected sharing that is not specified by the customer-controlled .travis.yml file. In particular, the desired behavior (if

How urgent is CVE-2021-41077?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

Software pages

Git vulnerabilities

References

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