CVE-2026-15615

HIGH

Logto - SAML <Conditions> Element Not Validated

Title source: rule

Description

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

References (2)

Core 2

Core References

https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/sso/SamlConnector/utils.ts#L175-L205

View Writeup ZIP pw:eip

https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/connectors/connector-saml/src/utils.ts#L46-L110

View Writeup ZIP pw:eip

Scores

CVSS v3 7.5

EPSS 0.0018

EPSS Percentile 8.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-345

Status published

Products (1)

Logto/Logto 1.12.0 - 1.37.1

Published Jul 23, 2026

Tracked Since Jul 23, 2026