text-line-parsernpm
Advisory published Updated
text-line-parser is a confirmed malicious npm package (MAL-2026-11151) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in text-line-parser (npm)
What this malware does
The package advertises itself as a text/line parsing utility, but its shipped index.js contains only unrelated color-conversion stubs (hexToRgb/rgbToHsl). On npm install, postinstall.js executes a shell pipeline that collects hostname, user, cwd, uname, /proc/1/cgroup, /.dockerenv, the process tree, local IP addresses, /etc/resolv.conf nameservers, and probes Tencent Cloud and AWS IMDS cloud-metadata endpoints. It then dumps the full process environment (filtering only npm_* noise, so CI tokens, cloud credentials, and API keys are captured) together with GitHub Actions identifiers (GITHUB_REPOSITORY, GITHUB_ACTOR, GITHUB_RUN_ID, CI, RUNNER_NAME), base64-encodes the payload, and sends it via HTTP to the hardcoded Burp Collaborator subdomain pzs5w7ntzhsnepwk564lyfdci3oucl0a.oastify.com. The declared package purpose does not require any of this behavior; the mismatch between the advertised text-parsing role and the shipped reconnaissance/exfiltration code is consistent with a typosquat/decoy supply-chain attack.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for text-line-parser (version 1.0.0).
If you installed it — respond
text-line-parser is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If text-line-parser was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks text-line-parser-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.