Vulnerability-Lookup

GHSA-VXQJ-8HG5-3V79

Vulnerability from github – Published: 2026-07-23 18:31 – Updated: 2026-07-27 18:31

Details

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

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-15615"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-23T16:17:14Z",
    "severity": "HIGH"
  },
  "details": "Logto omits validation of the SAML \u003cConditions\u003e element, enabling attackers to strip time and audience restrictions and replay assertions indefinitely.",
  "id": "GHSA-vxqj-8hg5-3v79",
  "modified": "2026-07-27T18:31:42Z",
  "published": "2026-07-23T18:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15615"
    },
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/connectors/connector-saml/src/utils.ts#L46-L110"
    },
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/sso/SamlConnector/utils.ts#L175-L205"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-15615 (GCVE-0-2026-15615)

Vulnerability from cvelistv5 – Published: 2026-07-23 15:43 – Updated: 2026-07-27 15:23

Title

SAML <Conditions> element not validated

Summary

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

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-27 15:23 UTC

CWE

CWE-345 Insufficient Verification of Data Authenticity
CWE-345 - Insufficient Verification of Data Authenticity

Assigner

certcc mitre root

References

2 references

URL	Tags
https://github.com/logto-io/logto/blob/ea3ede3502…
https://github.com/logto-io/logto/blob/ea3ede3502…

Impacted products

1 product

Vendor	Product	Version
Logto	Logto	Affected: 1.12.0 , ≤ 1.37.1 (custom)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-15615",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-27T15:23:05.498686Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-345",
                "description": "CWE-345 Insufficient Verification of Data Authenticity",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-27T15:23:36.546Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Logto",
          "vendor": "Logto",
          "versions": [
            {
              "lessThanOrEqual": "1.37.1",
              "status": "affected",
              "version": "1.12.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Logto omits validation of the SAML \u003cConditions\u003e element, enabling attackers to strip time and audience restrictions and replay assertions indefinitely."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-345 Insufficient Verification of Data Authenticity",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-23T15:43:42.802Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/core/src/sso/SamlConnector/utils.ts#L175-L205"
        },
        {
          "url": "https://github.com/logto-io/logto/blob/ea3ede35028dfd0bbb6d7b239623ce0e7f6cdff8/packages/connectors/connector-saml/src/utils.ts#L46-L110"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "SAML \u003cConditions\u003e element not validated",
      "x_generator": {
        "engine": "VINCE 3.0.43",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-15615"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-15615",
    "datePublished": "2026-07-23T15:43:42.802Z",
    "dateReserved": "2026-07-13T16:14:15.128Z",
    "dateUpdated": "2026-07-27T15:23:36.546Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-VXQJ-8HG5-3V79

CVE-2026-15615 (GCVE-0-2026-15615)

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