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CVE-2026-31381

MEDIUMCVSS 5.3/10EPSS 0.30%

Last modified

CVE-2026-31381 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability
0.30%

22.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GainsightAssistAll versions

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-31381?
An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.
How severe is CVE-2026-31381?
CVE-2026-31381 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-31381?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-31381?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST