Common Weakness Enumeration
CWE-639
AllowedAuthorization Bypass Through User-Controlled Key
Abstraction: Base · Status: Incomplete
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
5217 vulnerabilities reference this CWE, most recent first.
CVE-2026-103988 (GCVE-0-2026-103988)
Vulnerability from cvelistv5 – Published: 2026-10-14 20:35 – Updated: 2026-10-15 15:07
VLAI
EPSS
VEX
Title
FileRise renameFolder omits destination-parent authorization
Summary
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.23.0, FileRise /api/folder/renameFolder.php authorizes an authenticated, non-folder-scoped, non-administrator with a valid CSRF token against the source folder but does not independently authorize a changed destination parent. A qualifying user who owns a source folder can move that tree beneath another user's existing folder or into the root namespace, and the operation rekeys the moved ownership and ACL records to the new path. The destination must be unused and existing victim files cannot be overwritten. Distinct pre-fix errors reveal whether a specifically guessed destination path exists, but disclose no directory listing or file contents. This issue is fixed in version 3.23.0.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:07 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/error311/FileRise/security/adv… | x_refsource_CONFIRM |
| https://github.com/error311/FileRise/commit/cc111… | x_refsource_MISC |
| https://github.com/error311/FileRise/releases/tag… | x_refsource_MISC |
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CVE-2026-103525 (GCVE-0-2026-103525)
Vulnerability from cvelistv5 – Published: 2026-10-16 04:27 – Updated: 2026-10-16 15:09
VLAI
EPSS
VEX
Title
FluentCart A New Era of eCommerce <= 1.7.0 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'order_id' and 'billing_address_id' Parameters
Summary
The FluentCart A New Era of eCommerce – Faster, Lighter, and Simpler plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.7.0 via the 'order_id + billing_address_id (also shipping_address_id)' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to read and exfiltrate another customer's stored billing and shipping address PII — including street address, city, state, postcode, phone number, company name, VAT number, and legal registration ID — by enumerating sequential AUTO_INCREMENT order and address ID pairs. The id-equality guard intended to restrict address reuse is bypassed because the attacker controls both halves of the compared pair, and the unauthenticated AJAX entry point imposes only a soft rate limit of 5 requests per 60 seconds rather than any authentication or ownership check.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 14:51 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| wpmanageninja | FluentCart A New Era of eCommerce – Faster, Lighter, and Simpler |
Affected:
0 , ≤ 1.7.0
(semver)
|
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CVE-2026-103476 (GCVE-0-2026-103476)
Vulnerability from cvelistv5 – Published: 2026-09-30 17:22 – Updated: 2026-10-01 15:34
VLAI
EPSS
VEX
Title
yii2-starter-kit through 4.2.0 Unauthorized File Download via attachment-download
Summary
yii2-starter-kit through 4.2.0 fails to validate article publication status in the attachment-download endpoint, allowing unauthenticated attackers to download files from draft articles. Attackers can enumerate sequential attachment identifiers to retrieve files from unpublished articles without authentication or authorization checks.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:33 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/yii-starter-kit/yii2-starter-k… | issue-tracking |
| https://github.com/yii-starter-kit/yii2-starter-kit | product |
| https://github.com/yii-starter-kit/yii2-starter-k… | technical-description |
| https://www.vulncheck.com/advisories/yii2-starter… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| yii2-starter-kit | yii2-starter-kit |
Affected:
0 , ≤ 4.2.0
(custom)
|
Date Public
2026-09-30 00:00
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CVE-2026-103446 (GCVE-0-2026-103446)
Vulnerability from cvelistv5 – Published: 2026-09-30 17:13 – Updated: 2026-10-06 18:25
VLAI
EPSS
VEX
Title
WikiLambda exposes anonymous execution of unsaved Abstract Wikipedia fragments
Summary
Authorization bypass through User-Controlled key vulnerability in The Wikimedia Foundation MediaWiki WikiLambda extension allows Authentication Bypass.
This issue affects MediaWiki WikiLambda extension: 1.46.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 18:25 UTC
CWE
- CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Wikimedia Foundation | MediaWiki WikiLambda extension |
Affected:
1.46
|
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CVE-2026-103366 (GCVE-0-2026-103366)
Vulnerability from cvelistv5 – Published: 2026-10-14 07:43 – Updated: 2026-10-15 16:43
VLAI
EPSS
VEX
Title
Appointment Booking Plugin <= 5.7.3 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'booking[id]' and 'cart[id]' Parameters
Summary
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.7.3 via the `booking[id]` and `cart[id]` parameters on the `steps__reload_booking_form_summary_panel` and `steps__start` public routes (reachable through wp_ajax_nopriv_latepoint_route_call). This is due to `OsStepsHelper::set_required_objects()` feeding raw request parameters into `set_booking_object()` and `set_cart_object()`, which call `OsModel::set_data()` and load an arbitrary booking or cart row by primary key with no ownership check — the ownership guard the vendor added for the earlier disclosure lives only inside `OsStepsHelper::load_step()` and does not cover the sibling routes or `cart[id]` at all. This makes it possible for unauthenticated attackers to enumerate sequential booking / cart identifiers and read other customers' appointment details (service name, agent, date/time, duration, price breakdown, status) and other shoppers' pending checkout contents directly from the JSON responses.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 10:47 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
9 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| latepoint | Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress |
Affected:
0 , ≤ 5.7.3
(semver)
|
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CVE-2026-103288 (GCVE-0-2026-103288)
Vulnerability from cvelistv5 – Published: 2026-10-01 10:42 – Updated: 2026-10-01 13:28
VLAI
EPSS
VEX
Title
Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comment Like
Summary
Ghost, an open-source publishing platform, contains an input validation flaw in its comment like feature in versions from 5.9.0 before 6.44.1. An authenticated member can delete comment likes or dislikes belonging to other users that they are not authorized to delete, resulting in an authorization bypass and unauthorized modification of comment engagement data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:27 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/TryGhost/Ghost/security/adviso… | vendor-advisory |
| https://www.vulncheck.com/advisories/ghost-5.9.0-… | third-party-advisory |
Impacted products
Date Public
2026-08-11 00:00
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CVE-2026-103252 (GCVE-0-2026-103252)
Vulnerability from cvelistv5 – Published: 2026-10-01 10:41 – Updated: 2026-10-01 13:27
VLAI
EPSS
VEX
Title
n8n before 1.123.80, 2.39.6, and 2.40.1 Information Disclosure via Credential Test Endpoint
Summary
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain an authorization bypass vulnerability in the credential test endpoint that resolves project-scoped variables without validating caller access. Attackers can specify an arbitrary project ID in the request body to interpolate sensitive variables into credential test requests sent to attacker-controlled hosts for exfiltration.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:27 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories… | vendor-advisory |
| https://www.vulncheck.com/advisories/n8n-before-1… | third-party-advisory |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-103247 (GCVE-0-2026-103247)
Vulnerability from cvelistv5 – Published: 2026-10-01 10:41 – Updated: 2026-10-01 19:21
VLAI
EPSS
VEX
Title
n8n before 1.123.80 Credential Tampering via Duplicate Node IDs
Summary
n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard. Attackers with editor access to shared workflows can exploit mismatched node ID and name matching to retain victim credentials and redirect secrets to attacker-controlled hosts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 19:21 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories… | vendor-advisory |
| https://www.vulncheck.com/advisories/n8n-before-1… | third-party-advisory |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-103246 (GCVE-0-2026-103246)
Vulnerability from cvelistv5 – Published: 2026-10-01 10:41 – Updated: 2026-10-06 00:05
VLAI
EPSS
VEX
Title
n8n before 2.39.6 and 2.40.x before 2.40.1 Credential Disclosure via Node-Tool Introspection
Summary
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 00:05 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories… | vendor-advisory |
| https://www.vulncheck.com/advisories/n8n-before-2… | third-party-advisory |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-103237 (GCVE-0-2026-103237)
Vulnerability from cvelistv5 – Published: 2026-09-30 09:56 – Updated: 2026-09-30 17:08
VLAI
EPSS
VEX
Title
MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows
Summary
MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints (attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit), the application sanitizes the flat record by stripping the primary key and pinning the event_id or object_id to the caller's context. However, the underlying ORM's set() method gives priority to a nested key whose name matches the model alias and discards the outer scalar fields.
An authenticated user with basic write permissions can exploit this by embedding a nested block under the model alias key inside their request. The sanitization logic (id removal, event_id pinning) is applied to the outer record, but the ORM binds to the inner record instead, which carries an attacker-chosen id and event_id. This allows the attacker to overwrite, re-parent, or soft-delete rows belonging to other organizations or events they have no read access to.
Impact:
- Cross-tenant data integrity compromise (attribute values rewritten, objects re-parented to attacker events, rows soft-deleted)
- Affects multiple entity types: Attribute, Object, EventReport, Sighting, AttributeTag, ShadowAttribute
- Requires only a low-privilege authenticated account with perm_add
Affected versions: <2.5.48
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 17:08 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/MISP/MISP/commit/9485ae40d | patch |
Impacted products
GCVE extensions
AI-generated
Human-reviewed
Confidence: high
Model
qwen3.8:27b
advisory
bcp-05-x-01bcp-05-x-02
Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. Human validation is required before publication.
ai-computer-assisted:llm-generatedai-computer-assisted:classification
| Model | Source | Identifier |
|---|---|---|
| qwen3.8:27b | ollama | qwen3.8:27b |
- Generator
-
patch2vuln.pyon 2026-09-30 09:24 - Model
qwen3.8:27b- Input
-
https://github.com/MISP/MISP/commit/9485ae40d.patch
03af388a5ac0… - Confidence
- high
| Commit | Subject | Patch SHA-256 |
|---|---|---|
9485ae40d334
|
fix: [security] A nested model alias key no longer selects | 03af388a5ac0… |
Fix summary
The fix introduces a defensive save() override in the base model class that refuses to persist any record where the data array simultaneously contains a nested key matching the model alias and other top-level scalar fields, logging a warning and returning false. Additionally, all code paths that sanitize and save records (free-text import, module result processing, object delta merge, attribute bulk edit, sighting capture, shadow attribute proposal, event report creation) now explicitly unset the nested alias key from the data array before calling save(), ensuring the ORM cannot be redirected to an attacker-chosen row. Controller-level request reshaping was also corrected to avoid creating self-referencing data structures.
Patch summary
Added a save() override in AppModel.php that detects and rejects ambiguous payloads containing both a nested model-alias key and outer scalars. Added unset($data[$this->alias]) calls in Event.php (free-text, module results, object attribute save), MispAttribute.php (saveAttributes, captureAttribute, editAttributeBulk), MispObject.php (deltaMerge, editObject), ShadowAttribute.php (__preCaptureMassage), and Sighting.php (captureSightings) to strip the nested alias key before save. Changed six controller files to use $this->request->data = array('Model' => $this->request->data) instead of $this->request->data['Model'] = $this->request->data, preventing self-referencing structures. Added a new regression test suite (tests/testregressions.py) with cross-tenant attack scenarios and wired it into the CI workflow.
CVSS rationale
AV:N - MISP is a network-accessible web application. AC:L - The attack requires only crafting a request with a nested alias key; no race condition or complex state is needed. AT:N - No in-transit tampering required. PR:L - An authenticated user with basic write permission (perm_add) suffices; no admin or sync role needed. UI:N - No victim interaction required. VC:N - The attacker does not gain new read access; the impact is on data they can already partially see or infer. VI:H - The attacker can overwrite, re-parent, or soft-delete rows in the same instance, causing high integrity loss to the vulnerable component's data. VA:N - Soft-delete is a state change (integrity) rather than a service disruption. SC:N - No impact on separate components' confidentiality. SI:H - The cross-tenant nature means integrity of other organizations' data (a separate security scope) is compromised. SA:N - No security mechanism is weakened.
Weakness rationale
- CWE-639 The attacker controls the row identifier (id) inside the nested alias block, which the ORM uses to select the target row. The application's authorization and sanitization (id stripping, event_id pinning) is applied to the outer record and is bypassed because the ORM binds to the inner record. This is a direct case of a user-controlled key selecting an unauthorized resource.
- CWE-20 The application fails to validate or strip the nested model-alias key from user-supplied data before passing it to the ORM. The ORM's set() method interprets this key as the record to save, contradicting the application's intent. The absence of validation on this structural aspect of the input is the root cause.
Attack pattern rationale
- CAPEC-24 The attacker tampers with the structure of request parameters by injecting a nested key matching the model alias, causing the ORM to target a different row than the application intended. The outer parameters (sanitized id, pinned event_id) are effectively ignored in favor of the attacker-controlled inner parameters. This is a structural parameter tampering attack exploiting the ORM's data-binding semantics. The mapping is the closest available CAPEC; no more specific pattern for ORM-level key injection exists in the CAPEC catalog.
Assumptions to verify
- The affected version boundary is inferred from the tag_version_boundary metadata (v2.5.48); the exact last affected release and first fixed release are not explicitly stated in the patch.
- PR:L assumes the attacker needs only a basic authenticated account with perm_add; the regression tests confirm a non-admin, non-sync role suffices, but the minimum permission set is not exhaustively enumerated in the patch.
- VA:N assumes soft-delete is treated as an integrity impact (data state change) rather than an availability impact; if the organization considers soft-deleted records as unavailable, VA could be raised to L.
- CAPEC-24 (Parameter Tampering) is the closest available pattern; the specific ORM-level key-binding manipulation does not have a dedicated CAPEC entry, so the mapping is approximate.
- The Co-Authored-By line references an AI tool (Claude Opus 5); it is listed as a tool credit, not a human remediation developer, per CVE credit role semantics.
- The commit date is 2026-09-25; the vulnerability may have existed for an unknown duration prior to reporting.
Model comparison
Selected qwen3.8:27b
by deterministic-consensus-v1
The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required.
| Model | Score | Agreement | Confidence | Assumptions |
|---|---|---|---|---|
qwen3.8:27b |
5 | 9 | high | 6 |
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"value": "The fix introduces a defensive save() override in the base model class that refuses to persist any record where the data array simultaneously contains a nested key matching the model alias and other top-level scalar fields, logging a warning and returning false. Additionally, all code paths that sanitize and save records (free-text import, module result processing, object delta merge, attribute bulk edit, sighting capture, shadow attribute proposal, event report creation) now explicitly unset the nested alias key from the data array before calling save(), ensuring the ORM cannot be redirected to an attacker-chosen row. Controller-level request reshaping was also corrected to avoid creating self-referencing data structures."
}
],
"title": "MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows",
"x_gcve": [
{
"extensions": {
"bcp-05-x-01": {
"ai_annotations": [
{
"ai_level": "generated",
"description": "Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. Human validation is required before publication.",
"gna_source": 1,
"models": [
{
"gna_source": 1,
"identifier": "qwen3.8:27b",
"name": "qwen3.8:27b",
"source": "ollama"
}
],
"review_status": "full",
"scope": "record",
"tags": [
"ai-computer-assisted:llm-generated",
"ai-computer-assisted:classification"
]
}
]
},
"bcp-05-x-02": {
"x_patch2vuln": {
"assumptions": [
"The affected version boundary is inferred from the tag_version_boundary metadata (v2.5.48); the exact last affected release and first fixed release are not explicitly stated in the patch.",
"PR:L assumes the attacker needs only a basic authenticated account with perm_add; the regression tests confirm a non-admin, non-sync role suffices, but the minimum permission set is not exhaustively enumerated in the patch.",
"VA:N assumes soft-delete is treated as an integrity impact (data state change) rather than an availability impact; if the organization considers soft-deleted records as unavailable, VA could be raised to L.",
"CAPEC-24 (Parameter Tampering) is the closest available pattern; the specific ORM-level key-binding manipulation does not have a dedicated CAPEC entry, so the mapping is approximate.",
"The Co-Authored-By line references an AI tool (Claude Opus 5); it is listed as a tool credit, not a human remediation developer, per CVE credit role semantics.",
"The commit date is 2026-09-25; the vulnerability may have existed for an unknown duration prior to reporting."
],
"capecRationale": [
{
"capecId": "CAPEC-24",
"rationale": "The attacker tampers with the structure of request parameters by injecting a nested key matching the model alias, causing the ORM to target a different row than the application intended. The outer parameters (sanitized id, pinned event_id) are effectively ignored in favor of the attacker-controlled inner parameters. This is a structural parameter tampering attack exploiting the ORM\u0027s data-binding semantics. The mapping is the closest available CAPEC; no more specific pattern for ORM-level key injection exists in the CAPEC catalog."
}
],
"commit": "9485ae40d334471882e3bd246651acaa68feef34",
"confidence": "high",
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Jeroen Pinoy"
},
{
"lang": "en",
"type": "remediation developer",
"value": "iglocska"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Claude Opus 5"
}
],
"cvssRationale": "AV:N - MISP is a network-accessible web application. AC:L - The attack requires only crafting a request with a nested alias key; no race condition or complex state is needed. AT:N - No in-transit tampering required. PR:L - An authenticated user with basic write permission (perm_add) suffices; no admin or sync role needed. UI:N - No victim interaction required. VC:N - The attacker does not gain new read access; the impact is on data they can already partially see or infer. VI:H - The attacker can overwrite, re-parent, or soft-delete rows in the same instance, causing high integrity loss to the vulnerable component\u0027s data. VA:N - Soft-delete is a state change (integrity) rather than a service disruption. SC:N - No impact on separate components\u0027 confidentiality. SI:H - The cross-tenant nature means integrity of other organizations\u0027 data (a separate security scope) is compromised. SA:N - No security mechanism is weakened.",
"fixSummary": "The fix introduces a defensive save() override in the base model class that refuses to persist any record where the data array simultaneously contains a nested key matching the model alias and other top-level scalar fields, logging a warning and returning false. Additionally, all code paths that sanitize and save records (free-text import, module result processing, object delta merge, attribute bulk edit, sighting capture, shadow attribute proposal, event report creation) now explicitly unset the nested alias key from the data array before calling save(), ensuring the ORM cannot be redirected to an attacker-chosen row. Controller-level request reshaping was also corrected to avoid creating self-referencing data structures.",
"generatedAt": "2026-09-30T09:24:37.816321Z",
"generator": "patch2vuln.py",
"model": "qwen3.8:27b",
"modelComparison": {
"rankings": [
{
"agreementScore": 9,
"assumptionCount": 6,
"confidence": "high",
"model": "qwen3.8:27b",
"score": 5
}
],
"selectedModel": "qwen3.8:27b",
"selectionMethod": "deterministic-consensus-v1",
"selectionNotice": "The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required."
},
"patchSha256": "03af388a5ac0d93cebef902e0050aa8496aae8d88d1496b80abc0b9a929cb39a",
"patchSummary": "Added a save() override in AppModel.php that detects and rejects ambiguous payloads containing both a nested model-alias key and outer scalars. Added unset($data[$this-\u003ealias]) calls in Event.php (free-text, module results, object attribute save), MispAttribute.php (saveAttributes, captureAttribute, editAttributeBulk), MispObject.php (deltaMerge, editObject), ShadowAttribute.php (__preCaptureMassage), and Sighting.php (captureSightings) to strip the nested alias key before save. Changed six controller files to use $this-\u003erequest-\u003edata = array(\u0027Model\u0027 =\u003e $this-\u003erequest-\u003edata) instead of $this-\u003erequest-\u003edata[\u0027Model\u0027] = $this-\u003erequest-\u003edata, preventing self-referencing structures. Added a new regression test suite (tests/testregressions.py) with cross-tenant attack scenarios and wired it into the CI workflow.",
"patchTruncated": false,
"patches": [
{
"commit": "9485ae40d334471882e3bd246651acaa68feef34",
"patchSha256": "03af388a5ac0d93cebef902e0050aa8496aae8d88d1496b80abc0b9a929cb39a",
"source": "https://github.com/MISP/MISP/commit/9485ae40d.patch",
"sourceUrl": "https://github.com/MISP/MISP/commit/9485ae40d.patch",
"subject": "fix: [security] A nested model alias key no longer selects"
}
],
"source": "https://github.com/MISP/MISP/commit/9485ae40d.patch",
"subject": "fix: [security] A nested model alias key no longer selects",
"tagVersionBoundary": {
"commits_after_fix": 23,
"repository": "https://github.com/MISP/MISP",
"tag": "v2.5.48",
"version": "2.5.48",
"version_type": "semver"
},
"weaknessRationale": [
{
"cweId": "CWE-639",
"rationale": "The attacker controls the row identifier (id) inside the nested alias block, which the ORM uses to select the target row. The application\u0027s authorization and sanitization (id stripping, event_id pinning) is applied to the outer record and is bypassed because the ORM binds to the inner record. This is a direct case of a user-controlled key selecting an unauthorized resource."
},
{
"cweId": "CWE-20",
"rationale": "The application fails to validate or strip the nested model-alias key from user-supplied data before passing it to the ORM. The ORM\u0027s set() method interprets this key as the record to save, contradicting the application\u0027s intent. The absence of validation on this structural aspect of the input is the root cause."
}
]
}
}
},
"recordType": "advisory",
"vulnId": "GCVE-1-2026-20280"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
"assignerShortName": "CIRCL",
"cveId": "CVE-2026-103237",
"datePublished": "2026-09-30T09:56:35.584Z",
"dateReserved": "2026-09-30T09:56:33.891Z",
"dateUpdated": "2026-09-30T17:08:51.346Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Architecture and Design
For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
Mitigation
Architecture and Design
Implementation
Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.
Mitigation
Architecture and Design
Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.
No CAPEC attack patterns related to this CWE.