EUVD-2026-62757

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when...

CVE-2026-62317

CVE-2026-62317 is a ReDoS vulnerability in Logto (open-source auth infrastructure) prior to version 1.41.0. When the blockSubaddressing policy is enabled, the email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts constructs a regex (subaddressin...

CVE-2026-62317 Logto: ReDoS via unescaped user input in email subaddressing regex (blockSubaddressing)

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when...

CVE-2026-62317 Logto: ReDoS via unescaped user input in email subaddressing regex (blockSubaddressing)

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when...

CVE-2026-62317 Logto: ReDoS via unescaped user input in email subaddressing regex (blockSubaddressing)

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when...

PT-2026-78644

Name of the Vulnerable Software and Affected Versions Logto versions prior to 1.41.0 Description When the blockSubaddressing feature is enabled, the software uses an attacker-controlled domain from the email input to construct a regular expression. Due to a permissive emailRegEx that accepts...

CVE-2026-62317: Inefficient Regular Expression Complexity

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's email subaddressing blocklist in packages/core/src/libraries/sign-in-experience/email-blocklist-policy.ts used the attacker-controlled domain from email input to construct subaddressingRegex when...

PT-2026-78646

Name of the Vulnerable Software and Affected Versions Logto Tunnel versions prior to 0.3.9 Description The Logto Tunnel npm package contains a flaw where the createStaticFileProxy function in packages/tunnel/src/commands/tunnel/index.ts processes static asset requests using path.joinstaticPath,...

CVE-2026-63188: Improper Limitation of a Pathname to a Restricted Directory

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 0.3.9, the Logto Tunnel npm package enabled createStaticFileProxy from packages/tunnel/src/commands/tunnel/index.ts and passed request.url from static asset requests through...

CVE-2026-63187: Improper Control of Generation of Code

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. From 1.40.1 until 1.41.0, Logto's .github/workflows/commitlint.yml directly interpolated github.event.pullrequest.title into the Commitlint on PR title step's inline echo command before piping the title to npx commitlint. ...

PT-2026-78645

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. From 1.40.1 until 1.41.0, Logto's .github/workflows/commitlint.yml directly interpolated github.event.pull request.title into the Commitlint on PR title step's inline echo command before piping the title to npx commitlint....

CVE-2026-15616

Logto does not enforce locally configured MFA during SSO authentication, allowing users to bypass second-factor requirements and grants unauthorized access...

CVE-2026-15614

Logto silently fails to delete IdP-initiated SAML sessions, enabling session replay and reuse within the session’s validity window...

CVE-2026-15615

Logto omits validation of the SAML element, enabling attackers to strip time and audience restrictions and replay assertions indefinitely...

CVE-2026-15617

Logto performs principal lookup without normalizing email and identifier strings, enabling principal collision and unauthorized account access via case- or Unicode-different identities...

CVE-2026-15611

Logto allows unverified email-based SSO account linking, enabling an attacker to register an identity at a permissive IdP using a victim’s email and gain unauthorized access to the victim’s account...

CVE-2026-15611

The Logto identity platform is vulnerable to unauthorized account access due to unverified email-based SSO account linking . If a new SSO login arrives and no matching (issuer, identityId) account exists, Logto searches for a local user by the email address provided by the identity provider (IdP)...

EUVD-2026-48304

Logto bypasses OIDC nonce validation when the nonce claim is absent from the idtoken, enabling replay of authentication tokens and weakening session-binding...

CVE-2026-15612 LOIDC nonce validation bypass

Logto bypasses OIDC nonce validation when the nonce claim is absent from the idtoken, enabling replay of authentication tokens and weakening session-binding...

CVE-2026-15612

The Logto identity platform contains an OIDC nonce validation bypass (CVE-2026-15612) within its core protocol handling. The vulnerability occurs because the system stores a nonce in the connector session but only performs a validation check if the nonce claim is present in the id_token. When an ...