What’s Vulnerable › Vulnerabilities

CVE-2026-32980: OpenClaw < 2026.3.13 - Resource Exhaustion via Unauthenticated Telegram Webhook Request

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-29 · updated 2026-06-17
• Weakness: CWE-770

Description

OpenClaw before 2026.3.13 reads and buffers Telegram webhook request bodies before validating the x-telegram-bot-api-secret-token header, allowing unauthenticated attackers to exhaust server resources. Attackers can send POST requests to the webhook endpoint to force memory consumption, socket time, and JSON parsing work before authentication validation occurs.

Affected products

• OpenClaw: before 2026.3.13 — fixed in 2026.3.13

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.13. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/7e49e98f79073b11134beac27fdff547ba5a4a02
• https://github.com/openclaw/openclaw/security/advisories/GHSA-jq3f-vjww-8rq7
• https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-telegram-webhook-request

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