CVE-2026-31381 Gainsight Assist plugin information disclosure
Attackers can extract user email addresses from base64-encoded OAuth callback parameters, exposing PII in the Gainsight Assist plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-31381?
CVE-2026-31381 is a medium-severity vulnerability in Gainsight Assist, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.
Weakness: CWE-598
Which versions are affected by CVE-2026-31381?
It affects 1 product.
Products include Gainsight Assist.
How do I fix CVE-2026-31381?
No fix has been published for CVE-2026-31381 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-31381 being exploited?
There is no known exploitation of CVE-2026-31381 in the wild and no public exploit code.
Other vulnerabilities in Gainsight Assist
Sources
Also known as GHSA-r65g-h7vf-rvr5.