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GHSA-mj5r-hh7j-4gxf CVE-2026-28480

OpenClaw Telegram allowlist authorization accepted mutable usernames

Medium npm
Severity
0.0 / 10
Medium · CVSS 4.0
Exploit chance (EPSS)
0.24%
Chance of exploitation in the next 30 days. Higher than 15.61% of scored vulnerabilities.
Known exploited
No
Not in CISA's catalog
Weakness
CWE-284 Improper Access Control
CWE-290 Authentication Bypass by Spoofing
Fix
2026.2.14
Upgrade openclaw to this version or later

Description

Summary

Telegram allowlist authorization could match on @username (mutable/recyclable) instead of immutable numeric sender IDs.

Impact

Operators who treat Telegram allowlists as strict identity controls could unintentionally grant access if a username changes hands (identity rebinding/spoof risk). This can allow an unauthorized sender to interact with the bot in allowlist mode.

Affected Packages / Versions

  • npm openclaw: <= 2026.2.13
  • npm clawdbot: <= 2026.1.24-3

Fix

Telegram allowlist authorization now requires numeric Telegram sender IDs only. @username allowlist principals are rejected.

A security audit warning was added to flag legacy configs that still contain non-numeric Telegram allowlist entries.

openclaw doctor --fix now attempts to resolve @username allowFrom entries to numeric IDs (best-effort; requires a Telegram bot token).

Fix Commit(s)

  • e3b432e481a96b8fd41b91273818e514074e05c3
  • 9e147f00b48e63e7be6964e0e2a97f2980854128

Thanks @vincentkoc for reporting.

Affected versions

npm

PackageVulnerableFixed in
clawdbot
<= 2026.1.24-3
No fix yet
openclaw
< 2026.2.14
2026.2.14

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

openclaw npm → 2026.2.14

npm
npm install openclaw@2026.2.14
yarn
yarn add openclaw@2026.2.14
pnpm
pnpm add openclaw@2026.2.14

Severity breakdown

CVSS 4.0 0.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Attack vector
Network
Attack complexity
Low
Attack requirements
None
Privileges required
None
User interaction
None
Confidentiality (vulnerable system)
Low
Integrity (vulnerable system)
Low
Availability (vulnerable system)
None
Confidentiality (subsequent systems)
None
Integrity (subsequent systems)
None
Availability (subsequent systems)
None

CVSS 3.1 5.9

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

Weakness

CWE-284: Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

How to prevent it
  • Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
  • Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

CWE-290: Authentication Bypass by Spoofing

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

References

Timeline

  1. Published
  2. Last updated by the source
  3. Latest EPSS score
AdvisorySeverityWhy it's related
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Medium Also affects openclaw
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