MalwarePublished 29 Oct 2025

xo-title (npm) · Malicious Code

Affects xo-titleSource GCVE Database

Malicious package : remove xo-title and rotate any secrets on hosts that installed it.

Data as of 29 Oct 2026, 23:08 UTC

Classification

Malicious package

Published to npm · OSV MAL-2025-49073

What to do

Remove xo-title from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmxo-title	Affected =88.8.9	Fixed in–

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Description

The npm package 'xo-title' version 88.8.9 contains malicious code that installs a dependency from a custom domain which executes an information stealer during installation. This malware targets sensitive tokens related to npm, git, and CI/CD environments. Any system with this package installed is considered fully compromised, and all secrets and keys stored on that system should be rotated immediately from a separate, uncompromised machine.

Impact

Systems with the 'xo-title' package version 88.8.9 installed are fully compromised. Attackers can steal sensitive tokens used for npm, git, and CI/CD pipelines, which can lead to further unauthorized access and potential compromise of development and deployment environments. The compromise may allow attackers to maintain persistent control over the affected system.

Defensive guidance

Remove the 'xo-title' package version 88.8.9 immediately. Rotate all secrets, keys, and tokens that were stored or used on the compromised system from a different, secure computer. Because the system may be fully compromised, consider rebuilding or isolating the affected environment to ensure complete remediation.

Summary

The 'xo-title' npm package version 88.8.9 is malicious. It installs a dependency hosted on a custom domain that runs an info stealer during installation. The info stealer specifically targets npm, git, and other CI/CD tokens, potentially exposing sensitive credentials. Due to the nature of the compromise, removal of the package alone does not guarantee full remediation, as the attacker may have established persistent control over the system.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 29 Oct 2026, 23:08 UTC

Technical details

References

Community reviews