Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Affecting github.com/fleetdm/fleet/v4/server/sso package, versions <4.53.2>=4.54.0 <4.58.1>=4.62.0 <4.62.4>=4.63.0 <4.63.2>=4.64.0 <4.64.2
Threat Intelligence
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-GITHUBCOMFLEETDMFLEETV4SERVERSSO-9357560
- published7 Mar 2025
- disclosed6 Mar 2025
- credithakivvi
Introduced: 6 Mar 2025
CVE-2025-27509 Â (opens in a new tab)How to fix?
Upgrade github.com/fleetdm/fleet/v4/server/sso to version 4.53.2, 4.58.1, 4.62.4, 4.63.2, 4.64.2 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') due to improper SAML response validation. An attacker can forge authentication assertions and potentially impersonate legitimate users or provision new administrative accounts by crafting a specially-formed SAML response.
Workaround
This vulnerability can be mitigated by temporarily disabling single-sign-on (SSO) and using password authentication.