CVE-2021-39171
Unlimited transforms allowed for signed nodes
5.3
MEDIUM
CVSS 3.1
EPSS 0.47%
Description
### Impact 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. ### Patches This has been resolved in version 3.1.0. The resolution is to limit the number of allowable transforms to 2. ### References https://github.com/node-saml/passport-saml/pull/595
How to fix CVE-2021-39171
To remediate CVE-2021-39171, upgrade the affected package to a fixed version below.
- —upgrade to 3.1.0 or later
Is CVE-2021-39171 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.1.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |