How severe is CVE-2026-32727?

CVE-2026-32727 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-32727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32727?

CVE-2026-32727 affects Scitokens Scitokens Library. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32727?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-32727 have an EU (EUVD) identifier?

Yes. CVE-2026-32727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17292.

When was CVE-2026-32727 published?

CVE-2026-32727 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-32727

CVE-2026-32727 is a high-severity vulnerability in Scitokens Scitokens Library with a CVSS 3.x base score of 8.1. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17292
Weakness: CWE-22
Affected product: Scitokens Scitokens Library
Published: 2026-03-31
Last modified: 2026-06-17

Description

SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.7, the Enforcer is vulnerable to a path traversal attack where an attacker can use dot-dot (..) in the scope claim of a token to escape the intended directory restriction. This occurs because the library normalizes both the authorized path (from the token) and the requested path (from the application) before comparing them using startswith. This issue has been patched in version 1.9.7.

Frequently asked questions

What is CVE-2026-32727?: SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.7, the Enforcer is vulnerable to a path traversal attack where an attacker can use dot-dot (..) in the scope claim of a token to escape the intended directory restriction. This occurs because the library normalizes both the authorized path (from the token) and the requested path (from the application) before comparing them using startswith. This issue has been patched in version 1.9.7.
How severe is CVE-2026-32727?: CVE-2026-32727 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-32727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32727?: CVE-2026-32727 affects Scitokens Scitokens Library. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32727?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-32727 have an EU (EUVD) identifier?: Yes. CVE-2026-32727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17292.
When was CVE-2026-32727 published?: CVE-2026-32727 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:scitokens:scitokens_library:*:*:*:*:*:*:*:*

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