CVE-2026-32980
highpriority · track · 0EPSS 0.005 · 45 %ileDEEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (5)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-0727OpenClaw: Mehrere SchwachstellenDeutsch2026-03-15csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um beliebigen Code auszuführen, erweiterte Berechtigungen – sogar Administratorrechte – zu erlangen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen oder andere, nicht näher spezifizierte Angriffe durchzuführen.
- GHSA-jq3f-vjww-8rq7OpenClaw Telegram webhook request bodies were read before secret validation, enabling unauthenticated resource exhaustion2026-03-16ghsa · osvUS
### Summary `openclaw` versions `<= 2026.3.12` read and buffered Telegram webhook request bodies before validating `x-telegram-bot-api-secret-token`. This let unauthenticated callers force up to the configured webhook body limit of pre-auth body I/O and JSON parse work per request. ### Affected Packages / Versions - Package: `openclaw` (`npm`) - Affected versions: `<= 2026.3.12` - Fixed version: `2026.3.13` ### Details The vulnerable path was the standalone Telegram webhook listener in `src/telegram/webhook.ts`. In affected releases, the request handler accepted `POST` requests, called `readJsonBodyWithLimit(...)`, and only then checked the Telegram secret header. Because the secret validation happened after body reading, an unauthenticated caller could make the server spend memory, socket time, and JSON parse work on requests that should have been rejected before any body processing. This issue is in scope under OpenClaw's trust model because the Telegram webhook endpoint accepts untrusted network traffic and the secret header is the authentication boundary for that ingress path. ### Fix `openclaw@2026.3.13` validates the Telegram webhook secret before any body I/O. Current code reads the header, rejects invalid requests immediately with `401`, and only calls `readJsonBodyWithLimit(...)` after `hasValidTelegramWebhookSecret(...)` succeeds. Regression coverage exists in `src/telegram/webhook.test.ts` (`rejects unauthenticated requests before reading the request body`). ### Fix Commit(s) - `7e49e98f79073b11134beac27fdff547ba5a4a02` Thanks @space08 for reporting.
also known as (3)
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sources
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references (10)
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclaw/commit/7e49e98f79073b11134beac27fdff547ba5a4a02cnnvd
- https://github.com/openclaw/openclaw/releasesPatchcnnvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-jq3f-vjww-8rq7cnnvd
- https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-telegram-webhook-requestcnnvd
- https://github.com/openclaw/openclaw/commit/7e49e98f79073b11134beac27fdff547ba5a4a02enisa_euvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-jq3f-vjww-8rq7enisa_euvd
- https://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-telegram-webhook-requestenisa_euvd
- https://github.com/openclaw/openclaw/commit/7e49e98f79073b11134beac27fdff547ba5a4a02Patchnvd
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