Authentication Bypass Using an Alternate Path or Channel Affecting @openclaw/nextcloud-talk package, versions <2026.2.13
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-OPENCLAWNEXTCLOUDTALK-15307769
- published18 Feb 2026
- disclosed17 Feb 2026
- creditPetr Simecek
Introduced: 17 Feb 2026
CVE-2026-28454 (opens in a new tab)How to fix?
Upgrade @openclaw/nextcloud-talk to version 2026.2.13 or higher.
Overview
@openclaw/nextcloud-talk is an OpenClaw Nextcloud Talk channel plugin
Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via the Telegram webhook endpoint when webhook mode is enabled without a configured secret. An attacker can impersonate authorized users and execute privileged commands by sending forged HTTP POST requests with spoofed fields in the update payload.
Note: This is only exploitable if the Telegram webhook is enabled and no webhook secret is configured.