Which versions of checkout-postpone-until-render are malicious?

The following npm versions of checkout-postpone-until-render are flagged malicious: 35.2.4. Treat any of these as compromised.

How do I remediate checkout-postpone-until-render if I installed it?

checkout-postpone-until-render 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.

I already installed checkout-postpone-until-render — how do I know if it already compromised me?

If checkout-postpone-until-render 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.

Is checkout-postpone-until-render part of a known attack campaign?

Yes — checkout-postpone-until-render is associated with the IN-MAL-2026-015182 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find checkout-postpone-until-render across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for checkout-postpone-until-render (version 35.2.4).

Malicious package

checkout-postpone-until-rendernpm

Advisory published Aug 5, 2026Updated Aug 5, 2026

checkout-postpone-until-render is a confirmed malicious npm package (MAL-2026-12587) that steals credentials and exfiltrates sensitive data (malicious version 35.2.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in checkout-postpone-until-render (npm)

MAL-2026-12587

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall checkout-postpone-until-render

What this malware does

On require() of the package, index.js loads./vendor.js which assembles Cloudflare Workers hostnames (oob-worker.cf*.workers.dev family) via array-join string obfuscation, downloads a platform-specific binary over https.get with a DNS-TXT chunked fallback under *.dl.wel1.ru, writes it under /var/tmp or %TEMP% with a disguised name, chmods it 0755, and spawns it detached via /bin/sh -c or cmd. Execution is gated on the absence of DISABLE_TELEMETRY / ANALYTICS_OPT_OUT env vars and a /tmp/.analytics_state TTL flag to suppress repeated runs. A second copy of the drop-and-execute routine ships in lib/telemetry.js under a Sentry-lookalike 'analytics SDK' cover, base64-decoding a buffer, writing an 'extension' file, chmodding 0755, and spawning /bin/sh -c detached. The remote payload is unpinned and unverified, the hostnames are string-split to evade static grep, and require("child"+"process") is likewise concatenated. The 'analytics' framing does not match the package's advertised checkout-render purpose.

Malicious versions

1 flagged

35.2.4

Indicators of compromise (SHA-256)

3dda2bcf0b52999de23bed014cc8b4fbbe08dea5331db90dc732f2428e373445

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for checkout-postpone-until-render (version 35.2.4).
If you installed it — respond
checkout-postpone-until-render 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 checkout-postpone-until-render 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

No. checkout-postpone-until-render on npm has been identified as a malicious package (version 35.2.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-015182

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks checkout-postpone-until-render-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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