CVE-2026-104966 (GCVE-0-2026-104966)
Vulnerability from cvelistv5 – Published: 2026-10-05 16:54 – Updated: 2026-10-05 16:54
VLAI
EPSS
VEX
Title
Plane: Cross-Workspace IDOR in Estimate and Comment Endpoints Allows Read, Modify, and Inject Across Workspaces
Summary
Plane is an open-source project management tool. Prior to 1.4.0, two endpoint families fail to verify that nested resource identifiers belong to the workspace and project named in the URL. An authenticated user can read or modify estimates from another workspace through PATCH /api/workspaces/{slug}/projects/{project_id}/estimates/{estimate_id}/, and can inject comments into an issue from another workspace through POST /api/workspaces/{slug}/projects/{project_id}/issues/{issue_id}/comments/. ProjectEntityPermission verifies membership in the workspace and project from the URL, but estimate_id and issue_id are fetched by primary key without confirming the same scope. The list, retrieve, and destroy handlers correctly scope their queries, demonstrating the inconsistency. This issue is fixed in 1.4.0.
Severity
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/makeplane/plane/security/advis… | x_refsource_CONFIRM |
| https://github.com/makeplane/plane/pull/9286 | x_refsource_MISC |
| https://github.com/makeplane/plane/commit/971c2aa… | x_refsource_MISC |
| https://github.com/makeplane/plane/releases/tag/v1.4.0 | x_refsource_MISC |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
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"vendor": "makeplane",
"versions": [
{
"status": "affected",
"version": "\u003c 1.4.0"
}
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"descriptions": [
{
"lang": "en",
"value": "Plane is an open-source project management tool. Prior to 1.4.0, two endpoint families fail to verify that nested resource identifiers belong to the workspace and project named in the URL. An authenticated user can read or modify estimates from another workspace through PATCH /api/workspaces/{slug}/projects/{project_id}/estimates/{estimate_id}/, and can inject comments into an issue from another workspace through POST /api/workspaces/{slug}/projects/{project_id}/issues/{issue_id}/comments/. ProjectEntityPermission verifies membership in the workspace and project from the URL, but estimate_id and issue_id are fetched by primary key without confirming the same scope. The list, retrieve, and destroy handlers correctly scope their queries, demonstrating the inconsistency. This issue is fixed in 1.4.0."
}
],
"metrics": [
{
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"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
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"vulnConfidentialityImpact": "HIGH",
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}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-639",
"description": "CWE-639: Authorization Bypass Through User-Controlled Key",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-05T16:54:27.158Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/makeplane/plane/security/advisories/GHSA-933r-rxg8-f3h2",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/makeplane/plane/security/advisories/GHSA-933r-rxg8-f3h2"
},
{
"name": "https://github.com/makeplane/plane/pull/9286",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/makeplane/plane/pull/9286"
},
{
"name": "https://github.com/makeplane/plane/commit/971c2aadb4e848d70676b4f58b94bc7992dfe5fc",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/makeplane/plane/commit/971c2aadb4e848d70676b4f58b94bc7992dfe5fc"
},
{
"name": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
}
],
"source": {
"advisory": "GHSA-933r-rxg8-f3h2",
"discovery": "UNKNOWN"
},
"title": "Plane: Cross-Workspace IDOR in Estimate and Comment Endpoints Allows Read, Modify, and Inject Across Workspaces"
}
},
"cveMetadata": {
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"cveId": "CVE-2026-104966",
"datePublished": "2026-10-05T16:54:27.158Z",
"dateReserved": "2026-10-02T18:16:13.629Z",
"dateUpdated": "2026-10-05T16:54:27.158Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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"date": "2026-10-06",
"epss": "0.00246",
"percentile": "0.14482"
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"nvd": {
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"affected": [
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"vendor": "makeplane",
"versions": [
{
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"version": "\u003c 1.4.0"
}
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}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Plane is an open-source project management tool. Prior to 1.4.0, two endpoint families fail to verify that nested resource identifiers belong to the workspace and project named in the URL. An authenticated user can read or modify estimates from another workspace through PATCH /api/workspaces/{slug}/projects/{project_id}/estimates/{estimate_id}/, and can inject comments into an issue from another workspace through POST /api/workspaces/{slug}/projects/{project_id}/issues/{issue_id}/comments/. ProjectEntityPermission verifies membership in the workspace and project from the URL, but estimate_id and issue_id are fetched by primary key without confirming the same scope. The list, retrieve, and destroy handlers correctly scope their queries, demonstrating the inconsistency. This issue is fixed in 1.4.0."
}
],
"id": "CVE-2026-104966",
"lastModified": "2026-10-05T17:17:12.410",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
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"exploitMaturity": "NOT_DEFINED",
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"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
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"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/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",
"version": "4.0",
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"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "security-advisories@github.com",
"type": "Secondary"
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"published": "2026-10-05T17:17:12.283",
"references": [
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"url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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