# MAL-2026-5531: Malicious code in telegramlite (PyPI)


- **Type:** Malicious package
- **Package:** `telegramlite` (PyPI)
- **Published:** 10 Jun 2026

## What is MAL-2026-5531?

MAL-2026-5531 is a malicious package in telegramlite, published on 10 Jun 2026. 

### Official description

No install-time, import-time, or runtime behaviors of concern were observed in this version. The package name suggests a lightweight Telegram client wrapper, but no code paths matching credential theft, exfiltration, dropper, silent-relay, or backdoor patterns were identified in the scanned files. Routing to human review for name-similarity assessment against established Telegram client libraries before publishing a verdict.

Package exfiltrates data from the Telegram application to a remote location, effectively collecting Telegram sessions.

---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-06-telegramlite

Reasons (based on the campaign):

 - target:telegram

 - files-exfiltration

## What should I do about MAL-2026-5531?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-5531 is a malicious package: telegramlite (PyPI). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-5531/ (Markdown: https://insights.sbomify.com/MAL-2026-5531/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5531

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-5531/
Summaries are generated and may contain mistakes; the official description above is the record.