CVE-2026-100251: Wormhole.app SSRF

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-01 · updated 2026-10-11
Weakness: CWE-918

Description

Wormhole.app as deployed before 2026-08-22 misconfigures the coturn TURN server and does not properly restrict TCP relay peers, allowing an unauthenticated attacker to access instance metadata or to source TCP connections from the Wormhole relay's IP.

Affected products

Wormhole App Wormhole: before 2026-08-22 — fixed in 2026-08-22

How to fix

Upgrade to a fixed version: Wormhole App Wormhole 2026-08-22. Check the vendor advisory for mitigations.

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-275-04.json
https://wormhole.app/
https://www.cve.org/CVERecord?id=CVE-2026-100251

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