Vulnerability-Lookup

GHSA-2C8C-R4JF-GP34

Vulnerability from github – Published: 2026-08-28 21:31 – Updated: 2026-08-28 21:31

Details

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.

Severity

6.8 (Medium)


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

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-82263"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T20:20:16Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-2c8c-r4jf-gp34",
  "modified": "2026-08-28T21:31:19Z",
  "published": "2026-08-28T21:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82263"
    },
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/issues/9465"
    },
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/commit/16f4b2e732d5114ac98646c9370ec6ab61d6ed26"
    },
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto"
    },
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/blob/v1.42.0/packages/core/src/sso/OidcConnector/utils.ts"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/logto-server-side-request-forgery-via-oidc-sso-connector-issuer-url"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-82263 (GCVE-0-2026-82263)

Vulnerability from cvelistv5 – Published: 2026-08-28 16:18 – Updated: 2026-08-28 20:23

Title

Logto Server-Side Request Forgery via OIDC SSO Connector Issuer URL

Summary

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

6.8 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-28 20:23 UTC

CWE

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

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/logto-io/logto/issues/9465	issue-tracking
https://github.com/logto-io/logto	product
https://github.com/logto-io/logto/blob/v1.42.0/pa…	technical-description
https://github.com/logto-io/logto/commit/16f4b2e7…	patch
https://www.vulncheck.com/advisories/logto-server…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
logto-io	logto	Affected: 0 , ≤ 1.42.0 (semver)

Date Public

2026-08-16 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "metrics": [
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                "id": "CVE-2026-82263",
                "options": [
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                    "Exploitation": "poc"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T20:23:06.328291Z",
                "version": "2.0.3"
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          "dateUpdated": "2026-08-28T20:23:27.541Z",
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          "type": "reporter",
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    "datePublished": "2026-08-28T16:18:48.639Z",
    "dateReserved": "2026-08-28T11:12:28.377Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-2C8C-R4JF-GP34

CVE-2026-82263 (GCVE-0-2026-82263)

Tags

Sightings

Nomenclature