CVE-2021-39171: medium-severity vulnerability in node-saml passport-saml
Unlimited transforms allowed for signed nodes
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 1.3%
exploitation probability
1.3%top 29% of all CVEs
observed exploitation
nono source reports it
Passport-SAML is a SAML 2.0 authentication provider for Passport, the Node.js authentication library. Prior to version 3.1.0, a malicious SAML payload can require transforms that consume significant system resources to process, thereby resulting in reduced or denied service. This would be an effective way to perform a denial-of-service attack. This has been resolved in version 3.1.0. The resolution is to limit the number of allowable transforms to 2.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
node-saml · passport-samlRelated CVEs — node-saml passport-saml
In the same product, most dangerous first.