Why do CI/CD service accounts and publishing tokens need the same governance as human access?

Why This Matters for Security Teams

CI/CD service accounts and publishing tokens are not “just automation.” They can sign artefacts, invoke deployment systems, read build-time variables, and touch release infrastructure without a human ever logging in. That makes them high-value Non-Human Identities (NHIs), and they need the same lifecycle discipline as employee access: scoped issuance, ownership, monitoring, rotation, and rapid revocation. Current guidance from the OWASP Non-Human Identity Top 10 treats exposed or overprivileged machine credentials as a first-class attack path, not an edge case.

The reason is simple: a token that can publish code is effectively a production authority. If that token leaks, the attacker does not need to “break in” laterally in the traditional sense. They can act as the pipeline, inject malicious packages, or harvest secrets from environment variables and artifact stores. NHIMG research on the Guide to the Secret Sprawl Challenge shows how quickly secrets spread across repos, tickets, and collaboration tools once teams treat them as low-risk automation detail. In practice, many security teams encounter pipeline abuse only after a release artifact or runner has already been compromised, rather than through intentional access governance.

How It Works in Practice

The practical model is to treat CI/CD credentials as workload identities with a narrow purpose, short lifetime, and explicit ownership. That means the account or token should be tied to a named pipeline, repository, or release process, not shared across teams or reused across environments. It also means access should be issued just in time, where possible, and revoked automatically when the job completes or the build context changes. For broader identity governance, the NIST Cybersecurity Framework 2.0 remains a useful baseline for asset visibility, access control, and continuous monitoring.

In operational terms, security teams should align CI/CD service accounts and publishing tokens to the same controls used for human users:

• Assign a business owner and technical owner for every token or service account.
• Use least privilege so a release token can publish only what the pipeline needs, not read broad production data.
• Prefer short-lived secrets, OIDC federation, or signed workload identity over long-lived static credentials.
• Store secrets in a vault with rotation, revocation, and audit logging, not in environment files or shared chat.
• Monitor for anomalous use such as out-of-hours publishing, unusual repo access, or secret retrieval spikes.

This is consistent with NHI lifecycle guidance in NHIMG’s Ultimate Guide to NHIs, which emphasises that identity creation, use, and retirement must be managed as a continuous process. Where teams are building release trust, the key question is not whether the token “belongs to automation,” but whether the automation can be proven, constrained, and revoked like any other privileged actor. These controls tend to break down when legacy build systems depend on long-lived shared secrets because revocation then becomes a cross-team outage risk.

Common Variations and Edge Cases

Tighter governance often increases release friction, so organisations must balance speed against blast-radius reduction. That tradeoff is real in high-velocity engineering environments, especially where multiple repositories, ephemeral runners, and external package registries all participate in the same delivery chain. Current guidance suggests that shared tokens should be phased out, but there is no universal standard for the exact migration sequence yet.

Two edge cases matter most. First, some publishing flows still require long-lived credentials for third-party registries or legacy tooling. In those cases, compensation controls should include vault-based storage, per-token ownership, aggressive rotation, and anomaly detection. Second, machine identities sometimes outlive the pipeline that created them, especially after team reorgs or build platform changes. NHIMG research in the 2025 State of NHIs and Secrets in Cybersecurity shows how often former access remains active and how frequently tokens are duplicated across tools, which makes cleanup as important as issuance.

For organisations formalising governance, the NIST SP 800-53 Rev 5 Security and Privacy Controls provides a practical control vocabulary for access enforcement, auditability, and configuration management. The operational point is straightforward: if a CI/CD credential can publish, sign, or deploy, it is privileged access and should be treated that way from day one.

Related resources from NHI Mgmt Group

• Should organisations use the same governance model for CI/CD identities as for service accounts?
• Why do service accounts and access tokens create more breach risk than human accounts?
• Why do service accounts and tokens complicate Kubernetes access governance?
• Why does data access governance matter for service accounts and other non-human identities?