Server-side Request Forgery (SSRF) Affecting github.com/gotenberg/gotenberg/v8/pkg/modules/webhook package, versions <8.31.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-GOLANG-GITHUBCOMGOTENBERGGOTENBERGV8PKGMODULESWEBHOOK-16416452
- published4 May 2026
- disclosed30 Apr 2026
- creditmorimori-dev
Introduced: 30 Apr 2026
CVE-2026-40280 (opens in a new tab)How to fix?
Upgrade github.com/gotenberg/gotenberg/v8/pkg/modules/webhook to version 8.31.0 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the FilterDeadline process. An attacker can access internal network services and potentially exfiltrate sensitive information by submitting URLs with uppercase schemes that bypass the deny-list protections.