Which versions of markdown-to-html are malicious?

The following NuGet versions of markdown-to-html are flagged malicious: 1.0.0, 1.0.30, 1.0.32. Treat any of these as compromised.

How do I remediate markdown-to-html if I installed it?

Remove markdown-to-html from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed markdown-to-html — how do I know if it already compromised me?

If markdown-to-html 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 markdown-to-html part of a known attack campaign?

Yes — markdown-to-html is associated with the RLMA-2025-02021 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 markdown-to-html across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for markdown-to-html (3 malicious versions).

Malicious package

markdown-to-htmlNuGet

markdown-to-html is a confirmed malicious NuGet package (MAL-2025-2922) that executes malicious code on install (malicious versions 1.0.0, 1.0.30, 1.0.32). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in markdown-to-html (NuGet)

MAL-2025-2922

Immediate action

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

remove markdown-to-html

Malicious versions

3 flagged

1.0.01.0.301.0.32

Indicators of compromise (SHA-256)

a766ac9095cb35fab95d93a8585c328bc1140ca0dfbd308e93b31ab61c7a112c

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for markdown-to-html (3 malicious versions).
If you installed it — respond
Remove markdown-to-html from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If markdown-to-html 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. markdown-to-html on NuGet has been identified as a malicious package (versions 1.0.0, 1.0.30, 1.0.32 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-02021

Credits

ReversingLabs · finder

Detect & block this

O3 blocks markdown-to-html-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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