Vulnerability-Lookup

GHSA-897W-6P63-7P9G

Vulnerability from github – Published: 2026-10-27 06:31 – Updated: 2026-10-27 06:31

Details

Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-controlled device code and obtain a full read-write session valid for up to 365 days, bypassing the original token's scope and lifetime restrictions. This did not bypass two-factor authentication or directly disclose plaintext secrets.

Severity

6.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-117468"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-27T06:17:24Z",
    "severity": "MODERATE"
  },
  "details": "Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-controlled device code and obtain a full read-write session valid for up to 365 days, bypassing the original token\u0027s scope and lifetime restrictions. This did not bypass two-factor authentication or directly disclose plaintext secrets.",
  "id": "GHSA-897w-6p63-7p9g",
  "modified": "2026-10-27T06:31:23Z",
  "published": "2026-10-27T06:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117468"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117468.md"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/esaqa/psono/psono-server"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/views/device_code_claim.py"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/esaqa/psono/psono-server/-/commit/19ed5a192c704fece1645d946b6f4c36045bacbe"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-117468 (GCVE-0-2026-117468)

Vulnerability from cvelistv5 – Published: 2026-10-27 05:41 – Updated: 2026-10-27 05:59

Title

Device-code claim permits restricted token escalation in Psono Server

Summary

Severity

6.5 (Medium)


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

CWE

CWE-269 - Improper Privilege Management

Assigner

esaqa CNA under the ENISA root

CNA scorecard – unranked: 5 records in the last 180 days, 10 needed details

References

5 references

URL	Tags
https://gitlab.com/esaqa/psono/psono-server/-/blo…	technical-description
https://gitlab.com/esaqa/psono/psono-server/-/com…	patch
https://gitlab.com/esaqa/psono/psono-server/-/rel…	release-notes
https://gitlab.com/esaqa/psono/psono-server	product
https://gitlab.com/esaqa/esaqa/security-advisorie…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
esaqa GmbH	Psono	Affected: 5.3.5 , < 7.2.4 (semver)

Date Public

2026-10-27 00:00

Credits

Ryan Chaplin

Show details on NVD website

JSON

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          "modules": [
            "Psono Server Community Edition",
            "Psono Server Enterprise Edition"
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          "product": "Psono",
          "programFiles": [
            "psono/restapi/views/device_code_claim.py",
            "psono/restapi/views/device_code_token.py"
          ],
          "repo": "https://gitlab.com/esaqa/psono/psono-server",
          "vendor": "esaqa GmbH",
          "versions": [
            {
              "lessThan": "7.2.4",
              "status": "affected",
              "version": "5.3.5",
              "versionType": "semver"
            }
          ]
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          "url": "https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4"
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          "url": "https://gitlab.com/esaqa/psono/psono-server"
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    "dateReserved": "2026-10-27T05:33:18.001Z",
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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.

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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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