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

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 keys, access credentials, and API tokens. However, during the stated 8-day interval, secret data could be revealed to an unauthorized actor who forked a public repository and printed files during a build process.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

For a limited eight-day window in September 2021, Travis CI could expose customer secrets during builds in public repositories. The risk is highest where CI stored signing keys, API tokens, or access credentials. The source bundle does not provide a CVSS score or confirmed exploitation evidence.

Executive priority

Treat this as a credential-exposure incident for any affected Travis CI public repository. Prioritize secret inventory, rotation, and log review over generic vulnerability scanning because the main business risk is unauthorized reuse of leaked credentials.

Technical view

CVE-2021-41077 concerns Travis CI activation behavior for certain builds from 2021-09-03 through 2021-09-10. Secret environment data was not constrained as expected by customer-controlled .travis.yml behavior and could be revealed to an unauthorized actor interacting with a forked public repository build.

Likely exposure

Likely exposure is limited to Travis CI customers with public repositories, affected builds during 2021-09-03 to 2021-09-10, and configured customer-specific secrets such as signing keys, credentials, or API tokens. Repositories without Travis CI builds or without stored CI secrets are less likely affected.

Exploitation context

The CVE description explains a path where an unauthorized actor who forked a public repository could cause secrets to be revealed during a build. The supplied sources do not show CISA KEV listing or confirmed active exploitation.

Researcher notes

The available record names Travis CI behavior and a precise date window but does not provide affected product versions, CVSS, CWE, or patch mechanics. Analysis should stay tied to whether secrets were present and reachable in public-repository builds during that period.

Mitigation direction

  • Review the Travis CI bulletin and community notice for vendor guidance.
  • Rotate secrets used by affected Travis CI projects during the stated window.
  • Revoke exposed signing keys, API tokens, and access credentials where feasible.
  • Restrict CI secret availability to trusted branches or events where supported.
  • Remove unnecessary secrets from CI project configuration.

Validation and detection

  • Identify public repositories that used Travis CI from 2021-09-03 through 2021-09-10.
  • Inventory secrets configured for those Travis CI projects during the window.
  • Review build history and logs for unexpected fork-triggered builds.
  • Check downstream systems for use of CI-stored credentials after the exposure window.
  • Confirm rotated credentials are no longer accepted by dependent services.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2021-41077 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.