How severe is CVE-2023-40178?

CVE-2023-40178 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-40178 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40178?

CVE-2023-40178 affects Node Saml Project Node Saml. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40178?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-40178 published?

CVE-2023-40178 was published on 2023-08-23 and last updated on 2026-06-17.

CVE-2023-40178

CVE-2023-40178 is a medium-severity vulnerability in Node Saml Project Node Saml with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-613.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Node Saml Project Node Saml
Published: 2023-08-23
Last modified: 2026-06-17

Description

Node-SAML is a SAML library not dependent on any frameworks that runs in Node. The lack of checking of current timestamp allows a LogoutRequest XML to be reused multiple times even when the current time is past the NotOnOrAfter. This could impact the user where they would be logged out from an expired LogoutRequest. In bigger contexts, if LogoutRequests are sent out in mass to different SPs, this could impact many users on a large scale. This issue was patched in version 4.0.5.

Frequently asked questions

What is CVE-2023-40178?: Node-SAML is a SAML library not dependent on any frameworks that runs in Node. The lack of checking of current timestamp allows a LogoutRequest XML to be reused multiple times even when the current time is past the NotOnOrAfter. This could impact the user where they would be logged out from an expired LogoutRequest. In bigger contexts, if LogoutRequests are sent out in mass to different SPs, this could impact many users on a large scale. This issue was patched in version 4.0.5.
How severe is CVE-2023-40178?: CVE-2023-40178 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-40178 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40178?: CVE-2023-40178 affects Node Saml Project Node Saml. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40178?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-40178 published?: CVE-2023-40178 was published on 2023-08-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:node_saml_project:node_saml:*:*:*:*:*:node.js:*:*

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