Vulnerability-Lookup

GHSA-WM8W-PH5R-V9CM

Vulnerability from github – Published: 2026-10-11 18:30 – Updated: 2026-10-11 18:30

Details

Several Postiz endpoints return the complete database row of the record they operate on instead of only the fields the client needs. Two of them include secrets the caller is not meant to receive.

The public API's channel delete returns the deleted integration row, including the channel's platform access token and refresh token. A third-party OAuth app permitted to delete a channel therefore receives that channel's social platform credentials and can use them against the connected account directly, outside Postiz.

GET /user/organizations returns each organization row, including its API key, to every member of the organization. The API key is intended for admins only, so a member with a lower role can obtain it and call the public API on behalf of the organization.

Both endpoints require a valid session, API key or OAuth token and are scoped to the caller's own organization. There is no anonymous access and no cross-tenant exposure.

Severity

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-107761"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-11T16:16:30Z",
    "severity": "MODERATE"
  },
  "details": "Several Postiz endpoints return the complete database row of the record they operate on instead of only the fields the client needs. Two of them include secrets the caller is not meant to receive.\n\nThe public API\u0027s channel delete returns the deleted integration row, including the channel\u0027s platform access token and refresh token. A third-party OAuth app permitted to delete a channel therefore receives that channel\u0027s social platform credentials and can use them against the connected account directly, outside Postiz.\n\n`GET /user/organizations` returns each organization row, including its API key, to every member of the organization. The API key is intended for admins only, so a member with a lower role can obtain it and call the public API on behalf of the organization.\n\nBoth endpoints require a valid session, API key or OAuth token and are scoped to the caller\u0027s own organization. There is no anonymous access and no cross-tenant exposure.",
  "id": "GHSA-wm8w-ph5r-v9cm",
  "modified": "2026-10-11T18:30:23Z",
  "published": "2026-10-11T18:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107761"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitroomhq/postiz-app/commit/8ad0df3df0f21299b8640568358c1b68c6464e4f"
    },
    {
      "type": "WEB",
      "url": "https://gadvisory.org/advisories/PSA-2026-4QX1WG"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gitroomhq/postiz-app/releases/tag/v2.25.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/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-2026-107761 (GCVE-0-2026-107761)

Vulnerability from cvelistv5 – Published: 2026-10-11 15:23 – Updated: 2026-10-11 15:24

Title

Channel tokens and organization API key exposed in API responses

Summary

Several Postiz endpoints return the complete database row of the record they operate on instead of only the fields the client needs. Two of them include secrets the caller is not meant to receive. The public API's channel delete returns the deleted integration row, including the channel's platform access token and refresh token. A third-party OAuth app permitted to delete a channel therefore receives that channel's social platform credentials and can use them against the connected account directly, outside Postiz. `GET /user/organizations` returns each organization row, including its API key, to every member of the organization. The API key is intended for admins only, so a member with a lower role can obtain it and call the public API on behalf of the organization. Both endpoints require a valid session, API key or OAuth token and are scoped to the caller's own organization. There is no anonymous access and no cross-tenant exposure.

Severity

5.3 (Medium)


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

CWE

Assigner

postiz CNA under the mitre root

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

References

3 references

URL	Tags
https://github.com/gitroomhq/postiz-app/commit/8a…	patch
https://github.com/gitroomhq/postiz-app/releases/…	release-notes
https://gadvisory.org/advisories/PSA-2026-4QX1WG	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
GitroomHQ	postiz-app	Affected: 0 , < 2.25.1 (semver)

Date Public

2026-10-11 15:23

Credits

Gilad Resisi Enno Gelhaus Gilad Resisi

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "postiz-app",
          "product": "postiz-app",
          "repo": "https://github.com/gitroomhq/postiz-app",
          "vendor": "GitroomHQ",
          "versions": [
            {
              "lessThan": "2.25.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Gilad Resisi"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Enno Gelhaus"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Gilad Resisi"
        }
      ],
      "datePublic": "2026-10-11T15:23:02.002Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Several Postiz endpoints return the complete database row of the record they operate on instead of only the fields the client needs. Two of them include secrets the caller is not meant to receive.\n\nThe public API\u0027s channel delete returns the deleted integration row, including the channel\u0027s platform access token and refresh token. A third-party OAuth app permitted to delete a channel therefore receives that channel\u0027s social platform credentials and can use them against the connected account directly, outside Postiz.\n\n`GET /user/organizations` returns each organization row, including its API key, to every member of the organization. The API key is intended for admins only, so a member with a lower role can obtain it and call the public API on behalf of the organization.\n\nBoth endpoints require a valid session, API key or OAuth token and are scoped to the caller\u0027s own organization. There is no anonymous access and no cross-tenant exposure."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "A third-party OAuth app permitted to delete a channel obtains that channel\u0027s social platform access and refresh tokens and can act on the connected account outside Postiz."
            }
          ]
        },
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "An organization member without the admin role obtains the organization API key and can use the public API on behalf of the organization."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-201",
              "description": "CWE-201",
              "lang": "en",
              "type": "CWE"
            },
            {
              "cweId": "CWE-213",
              "description": "CWE-213",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-11T15:24:16.835Z",
        "orgId": "4cdc9741-f887-419a-a2fd-acbbd2729276",
        "shortName": "postiz"
      },
      "references": [
        {
          "name": "8ad0df3",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/gitroomhq/postiz-app/commit/8ad0df3df0f21299b8640568358c1b68c6464e4f"
        },
        {
          "name": "v2.25.1",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/gitroomhq/postiz-app/releases/tag/v2.25.1"
        },
        {
          "name": "GAdvisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://gadvisory.org/advisories/PSA-2026-4QX1WG"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-01T08:13:00.000Z",
          "value": "Postiz has discovered the vulnerability."
        },
        {
          "lang": "en",
          "time": "2026-10-08T05:03:00.000Z",
          "value": "Postiz has developed and verified a patch."
        },
        {
          "lang": "en",
          "time": "2026-10-11T15:16:00.000Z",
          "value": "Postiz has created the release and published the advisory."
        }
      ],
      "title": "Channel tokens and organization API key exposed in API responses"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4cdc9741-f887-419a-a2fd-acbbd2729276",
    "assignerShortName": "postiz",
    "cveId": "CVE-2026-107761",
    "datePublished": "2026-10-11T15:23:15.196Z",
    "dateReserved": "2026-10-08T19:04:47.306Z",
    "dateUpdated": "2026-10-11T15:24:16.835Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

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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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