What is CVE-2026-82263?

CVE-2026-82263 is a medium-severity vulnerability in Logto-Io Logto, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-08-28.

How severe is CVE-2026-82263?

Medium severity. CVSS v3 base score is 6.8 out of 10.

SSRF in Logto-Io Logto

CVE-2026-82263

Logto through 1.42.0 contains a server-side request forgery vulnerability in the OIDC SSO connector creation endpoint that fails to validate the issuer URL parameter. Tenant administrators with Management API credentials can supply arbitrary internal URLs to trigger HTTP GET requests to private network services, with response content returned in API responses.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-08-28 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (38.0th percentile), scored 2026-10-13.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

Logto-Io Logto

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

GitHub Issue #9465 (issue-tracking)
github.com/logto-io/logto (product)
Vulnerable code: utils.ts (technical-description)
Fix commit (patch)
VulnCheck Advisory: Logto Server-Side Request Forgery via OIDC SSO Connector Issuer URL (third-party-advisory)

Frequently asked questions

What is CVE-2026-82263?: CVE-2026-82263 is a medium-severity vulnerability in Logto-Io Logto, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-08-28.
How severe is CVE-2026-82263?: Medium severity. CVSS v3 base score is 6.8 out of 10.