ngrok is Vulnerable to Command Injection

published 2026-05-18 5mo ago modified 2026-10-26 14d ago also GHSA-qr28-p3wr-mxq3 , EUVD-2025-209888

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

ngrok v4.3.3 and 5.0.0-beta.2 is vulnerable to Command Injection.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 5mo ago (2026-05-18)

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	ngrok	1 listed version	no fix listed

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command

References

npmjs.com
web
gist.github.com /Dremig/90c2a0a2f85b0921f10e0bb3192a0c23
web
nvd.nist.gov /vuln/detail/CVE-2025-57282
advisory
github.com /bubenshchykov/ngrok
package

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.