# Logto vulnerabilities

Source: https://junglewise.ai/threats/technologies/logto  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/logto.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 14 vulnerabilities in Logto: 0 in the last 7 days and 4 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-63203, was published on 24 September 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 4
- All time: 14 (0 critical, 0 exploited in the wild)

## About Logto

Logto is an open-source identity infrastructure for building modern apps and SaaS products.

## Latest Logto vulnerabilities

- [CVE-2026-63203: Logto Account API authorization bypass for third-party tokens](https://junglewise.ai/threats/cve-2026-63203-logto-is-the-modern-open-source-auth-infrastructure-for-saas-and) (high, CVSS 7.6, published 24 Sep 2026)
- [CVE-2026-56739: Logto SSRF in webhook and connector endpoints](https://junglewise.ai/threats/cve-2026-56739-logto-is-the-modern-open-source-auth-infrastructure-for-saas-and) (info, published 24 Sep 2026)
- [CVE-2026-82263: Logto server-side request forgery in OIDC connector creation](https://junglewise.ai/threats/cve-2026-82263-logto-server-side-request-forgery-in-oidc-connector-creation) (medium, CVSS 6.8, published 28 Aug 2026)
- [CVE-2026-82262: Logto server-side request forgery in webhook test endpoint](https://junglewise.ai/threats/cve-2026-82262-logto-server-side-request-forgery-in-webhook-test-endpoint) (medium, CVSS 6.8, published 28 Aug 2026)
- [CVE-2026-15617: Logto account takeover via improper identifier normalization](https://junglewise.ai/threats/cve-2026-15617-logto-account-takeover-via-improper-identifier-normalization) (info, published 23 Jul 2026)
- [CVE-2026-15616: Logto MFA bypass during SSO authentication](https://junglewise.ai/threats/cve-2026-15616-logto-mfa-bypass-during-sso-authentication) (info, CVSS 0, published 23 Jul 2026)
- [CVE-2026-15615: Logto missing SAML Conditions validation in SAML Connector](https://junglewise.ai/threats/cve-2026-15615-logto-missing-saml-conditions-validation-in-saml-connector) (info, published 23 Jul 2026)
- [CVE-2026-15614: Logto session replay vulnerability in IdP-initiated SAML sessions](https://junglewise.ai/threats/cve-2026-15614-logto-session-replay-vulnerability-in-idp-initiated-saml-sessions) (info, CVSS 0, published 23 Jul 2026)
- [CVE-2026-15612: Logto OIDC nonce validation bypass in OidcConnector](https://junglewise.ai/threats/cve-2026-15612-logto-oidc-nonce-validation-bypass-in-oidcconnector) (info, published 23 Jul 2026)
- [CVE-2026-15611: Logto unverified email-based SSO account linking](https://junglewise.ai/threats/cve-2026-15611-logto-unverified-email-based-sso-account-linking) (info, CVSS 8.1, published 23 Jul 2026)
- [CVE-2026-55789: Logto XML injection in SAML IdP profile attributes](https://junglewise.ai/threats/cve-2026-55789-logto-xml-injection-in-saml-idp-profile-attributes) (high, CVSS 8.5, published 10 Jul 2026)
- [CVE-2026-55377: Logto MFA bypass in Account Center step-up verification](https://junglewise.ai/threats/cve-2026-55377-logto-mfa-bypass-in-account-center-step-up-verification) (high, CVSS 8.1, published 10 Jul 2026)
- [CVE-2026-55370: Logto TOTP authentication bypass via capture-replay](https://junglewise.ai/threats/cve-2026-55370-logto-totp-authentication-bypass-via-capture-replay) (medium, CVSS 6.4, published 10 Jul 2026)
- [CVE-2026-54714: Logto reflected XSS in SAML auto-submit form](https://junglewise.ai/threats/cve-2026-54714-logto-reflected-xss-in-saml-auto-submit-form) (medium, CVSS 6.1, published 10 Jul 2026)

## Most severe Logto vulnerabilities

- [CVE-2026-55789: Logto XML injection in SAML IdP profile attributes](https://junglewise.ai/threats/cve-2026-55789-logto-xml-injection-in-saml-idp-profile-attributes) (high, CVSS 8.5, published 10 Jul 2026)
- [CVE-2026-55377: Logto MFA bypass in Account Center step-up verification](https://junglewise.ai/threats/cve-2026-55377-logto-mfa-bypass-in-account-center-step-up-verification) (high, CVSS 8.1, published 10 Jul 2026)
- [CVE-2026-63203: Logto Account API authorization bypass for third-party tokens](https://junglewise.ai/threats/cve-2026-63203-logto-is-the-modern-open-source-auth-infrastructure-for-saas-and) (high, CVSS 7.6, published 24 Sep 2026)
- [CVE-2026-82263: Logto server-side request forgery in OIDC connector creation](https://junglewise.ai/threats/cve-2026-82263-logto-server-side-request-forgery-in-oidc-connector-creation) (medium, CVSS 6.8, published 28 Aug 2026)
- [CVE-2026-82262: Logto server-side request forgery in webhook test endpoint](https://junglewise.ai/threats/cve-2026-82262-logto-server-side-request-forgery-in-webhook-test-endpoint) (medium, CVSS 6.8, published 28 Aug 2026)
- [CVE-2026-55370: Logto TOTP authentication bypass via capture-replay](https://junglewise.ai/threats/cve-2026-55370-logto-totp-authentication-bypass-via-capture-replay) (medium, CVSS 6.4, published 10 Jul 2026)
- [CVE-2026-54714: Logto reflected XSS in SAML auto-submit form](https://junglewise.ai/threats/cve-2026-54714-logto-reflected-xss-in-saml-auto-submit-form) (medium, CVSS 6.1, published 10 Jul 2026)
- [CVE-2026-15611: Logto unverified email-based SSO account linking](https://junglewise.ai/threats/cve-2026-15611-logto-unverified-email-based-sso-account-linking) (info, CVSS 8.1, published 23 Jul 2026)
- [CVE-2026-15616: Logto MFA bypass during SSO authentication](https://junglewise.ai/threats/cve-2026-15616-logto-mfa-bypass-during-sso-authentication) (info, CVSS 0, published 23 Jul 2026)
- [CVE-2026-15614: Logto session replay vulnerability in IdP-initiated SAML sessions](https://junglewise.ai/threats/cve-2026-15614-logto-session-replay-vulnerability-in-idp-initiated-saml-sessions) (info, CVSS 0, published 23 Jul 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 2 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 2 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Logto vulnerabilities", https://junglewise.ai/threats/technologies/logto, 9 November 2026.