How severe is CVE-2026-31381?

CVE-2026-31381 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 low, integrity none, and availability none.

Is CVE-2026-31381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31381?

CVE-2026-31381 affects Gainsight Assist. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31381?

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

Does CVE-2026-31381 have an EU (EUVD) identifier?

Yes. CVE-2026-31381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13684.

When was CVE-2026-31381 published?

CVE-2026-31381 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-31381

CVE-2026-31381 is a medium-severity vulnerability in Gainsight Assist 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-598.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13684
Weakness: CWE-598
Affected product: Gainsight Assist
Published: 2026-03-20
Last modified: 2026-06-17

Description

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

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 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 low, integrity none, and availability none.
Is CVE-2026-31381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31381?: CVE-2026-31381 affects Gainsight Assist. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31381?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-31381 have an EU (EUVD) identifier?: Yes. CVE-2026-31381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13684.
When was CVE-2026-31381 published?: CVE-2026-31381 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gainsight:assist:-:*:*:*:*:*:*:*

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