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.
4774 vulnerabilities reference this CWE, most recent first.
CVE-2026-91846 (GCVE-0-2026-91846)
Vulnerability from cvelistv5 – Published: 2026-09-15 08:36 – Updated: 2026-09-15 13:50
VLAI
EPSS
VEX
Title
MISP Collection Element Add Missing Authorization on Referenced Object UUID
Summary
Affected versions of MISP allow a collection element to be created from a bare UUID without consistently checking whether the acting user is allowed to access the referenced object.
The commit explains that collection elements themselves only store UUIDs, while the collection view later resolves those UUIDs into their underlying objects. Before this fix, the generic add() path could therefore persist a UUID for an Event or Galaxy Cluster that the caller could not normally read. The patch explicitly notes that this made collections a way to reference another organisation’s private data and had caused disclosure of organisation-only events in the beta collection view.
The fix centralizes authorization in __assertCanUseElements(). Event UUIDs are validated through Event::fetchSimpleEvent() under the current user’s ACL, while Galaxy Cluster UUIDs are checked through GalaxyCluster::fetchGalaxyClusters(). The check is applied both to the CRUD add() path and to addElementToCollection().
Version affected: ≤2.5.45
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:41 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/MISP/MISP/commit/334d53709 | patch |
GCVE extensions
AI-generated
Confidence: medium
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 2026-09-15 08:32 - Model
qwen3.8:27b- Input
-
https://github.com/MISP/MISP/commit/334d53709.patch
259d46cb7727… - Confidence
- medium
| Commit | Subject | Patch SHA-256 |
|---|---|---|
334d53709597
|
fix: [acl] Authorise the object a collection element points | 259d46cb7727… |
Fix summary
The fix introduces a dedicated __assertCanUseElements() authorization guard that is invoked in the beforeSave callback of the add() CRUD path (covering both form and REST submission) and in addElementToCollection(). For each element UUID, the method resolves the element type (deducing it if the caller omitted the field, preventing bypass by omission) and performs an ACL-aware lookup: for Events it calls fetchSimpleEvent() scoped to the current user, and for GalaxyClusters it calls fetchGalaxyClusters() with the user context. If the object does not exist or the caller lacks access, a NotFoundException is raised and the save is aborted. This ensures that no collection element can reference an object the caller is not authorized to read.
Patch summary
In app/Controller/CollectionElementsController.php, a new private method __assertCanUseElements() is added (approximately 45 lines) that iterates over normalized element UUIDs, deduces the element type when not explicitly supplied, and performs an ACL-scoped existence check via Event::fetchSimpleEvent() or GalaxyCluster::fetchGalaxyClusters(). The add() method's beforeSave closure is modified to call this guard before persisting the row. The addElementToCollection() method is refactored to replace its inline Event-only check with a call to the same __assertCanUseElements() helper, gaining GalaxyCluster coverage. Net change: 53 insertions, 12 deletions in one file.
CVSS rationale
AV:N: MISP is a network-accessible web application. AC:L: The attacker simply submits a UUID to the existing add endpoint; no race condition or complex bypass is needed. AT:N: No prior compromise or user interaction is required. PR:L: An authenticated MISP user with permission to manage collection elements is required. UI:N: No victim interaction is needed; the disclosure occurs when the attacker views their own collection. VC:L: The attacker gains read access to Events or GalaxyClusters belonging to other organizations or restricted scopes. VI:L: Unauthorized references are persisted in the collection, altering data integrity. VA:N: No availability impact. SC/SI/SA:N: No impact on adjacent systems.
Weakness rationale
- CWE-862 The add() method stored collection element UUIDs without performing any authorization check on the referenced object. The fix adds an explicit ACL verification step before persistence, confirming the original code lacked the required authorization control.
- CWE-639 The attacker-supplied UUID (a user-controlled key) was accepted and stored without verifying that the caller held a valid access grant for that specific object, allowing reference to objects outside the caller's authorized scope.
Assumptions to verify
- The affected version range is not explicitly stated in the patch; the tag boundary indicates the fix is 204 commits after v2.5.46, but the exact fixed release version is unconfirmed.
- PR:L assumes the attacker needs only a basic authenticated MISP account with collection-element management rights; if a higher privilege level is required, PR should be raised.
- The commit message references 'V17' as a related disclosure scenario; this is treated as internal context and not used to expand the affected scope.
- The deduceType() fallback path is assumed to be reachable by an attacker omitting the element_type field, which the patch explicitly guards against.
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 |
6 | 9 | medium | 4 |
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CVE-2026-91773 (GCVE-0-2026-91773)
Vulnerability from cvelistv5 – Published: 2026-09-15 01:20 – Updated: 2026-09-24 14:22
VLAI
EPSS
VEX
Title
Soft Serve 0.7.1 through 0.11.6 Information Disclosure via LFS Locks
Summary
Soft Serve versions 0.7.1 through 0.11.6 fail to scope Git LFS lock queries by repository, allowing authenticated users to read lock metadata from repositories they cannot access. Attackers with write access to any repository can enumerate lock IDs globally to recover locked file paths, usernames, and lock timestamps from private repositories.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 19:05 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/charmbracelet/soft-serve/secur… | vendor-advisory |
| https://github.com/charmbracelet/soft-serve/commi… | patch |
| https://github.com/charmbracelet/soft-serve/blob/… | technical-description |
| https://github.com/charmbracelet/soft-serve | product |
| https://www.vulncheck.com/advisories/soft-serve-0… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| charmbracelet | soft-serve |
Affected:
0.7.1 , < 0.12.0
(semver)
cpe:2.3:a:charm:soft_serve:*:*:*:*:*:*:*:* |
Date Public
2026-07-31 00:00
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CVE-2026-91770 (GCVE-0-2026-91770)
Vulnerability from cvelistv5 – Published: 2026-09-15 01:20 – Updated: 2026-09-24 14:22
VLAI
EPSS
VEX
Title
IceHRM before 36.0.0 Broken Access Control via Employee ID
Summary
IceHRM before 36.0.0 fails to validate employee ownership on seven REST sub-resource endpoints, allowing authenticated employees to read any colleague's HR records. Attackers can substitute arbitrary employee IDs in skill, education, certification, language, leave, attendance, and status endpoints to access sensitive personnel data.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:46 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/gamonoid/icehrm/issues/375 | issue-tracking |
| https://github.com/gamonoid/icehrm/commit/19674f2… | patch |
| https://github.com/gamonoid/icehrm/releases/tag/v36.0.0 | release-notes |
| https://github.com/gamonoid/icehrm/blob/e75ed7e45… | technical-description |
| https://github.com/gamonoid/icehrm | product |
| https://www.vulncheck.com/advisories/icehrm-befor… | third-party-advisory |
Impacted products
Date Public
2026-06-14 00:00
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CVE-2026-91144 (GCVE-0-2026-91144)
Vulnerability from cvelistv5 – Published: 2026-09-14 21:45 – Updated: 2026-09-24 14:22
VLAI
EPSS
VEX
Title
ZFile through 5.0.5 Share Entry Filter Bypass via Download Endpoint
Summary
ZFile through 5.0.5 fails to validate requested file paths against a share link's allowed entries on the download endpoint. Attackers holding a share link can supply arbitrary file paths as query parameters to download any file under the shared base directory, bypassing the intended access restrictions.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:28 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zfile-dev/zfile/issues/826 | issue-tracking |
| https://github.com/zfile-dev/zfile | product |
| https://github.com/zfile-dev/zfile/blob/5.0.5/src… | technical-description |
| https://www.vulncheck.com/advisories/zfile-throug… | third-party-advisory |
Impacted products
Date Public
2026-06-16 00:00
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CVE-2026-91109 (GCVE-0-2026-91109)
Vulnerability from cvelistv5 – Published: 2026-10-01 03:28 – Updated: 2026-10-03 15:42
VLAI
EPSS
VEX
Title
Simply Schedule Appointments <= 1.6.12.31 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Disclosure via 'complete_group' Parameter
Summary
The Simply Schedule Appointments plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.6.12.31 via the 'complete_group' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to disclose every co-booker's private per-appointment id_token (exposed as public_token) alongside their PII (name and email address), then use each leaked token to read, overwrite arbitrary appointment meta on, or cancel the co-booker's appointment via the same REST controller. Exploitation requires the attacker to possess a valid id_token for any single appointment within the targeted group booking.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-03 15:29 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| croixhaug | Simply Schedule Appointments |
Affected:
0 , ≤ 1.6.12.31
(semver)
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CVE-2026-91107 (GCVE-0-2026-91107)
Vulnerability from cvelistv5 – Published: 2026-10-05 21:29 – Updated: 2026-10-06 13:54
VLAI
EPSS
VEX
Title
openSIS Classic 9.3 - Insecure Direct Object Reference (IDOR)
Summary
openSIS Classic 9.3 allows an authenticated user with the built-in teacher role can select an arbitrary staff record through staff_id and cause the School Information update path to reset that selected account's password.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 13:53 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Fluid Attacks
CNA
References
3 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/hearts | third-party-advisory |
| https://github.com/OS4ED/openSIS-Classic | product |
| https://github.com/OS4ED/openSIS-Classic/commit/2… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OS4ED | openSIS-Classic |
Affected:
9.3
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CVE-2026-91050 (GCVE-0-2026-91050)
Vulnerability from cvelistv5 – Published: 2026-10-10 05:30 – Updated: 2026-10-10 05:30
VLAI
EPSS
VEX
Title
Appointment Booking Plugin <= 5.7.2 - Insecure Direct Object Reference to Authenticated (Subscriber+) Unauthorized Booking Creation and Sensitive Information Disclosure via 'params[presets][order_item_id]' Parameter
Summary
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference / Missing Authorization in versions up to, and including, 5.7.2. This is due to the publicly reachable steps__start and steps__load_step routes accepting a params[presets][order_item_id] value that is copied verbatim into the booking object without verifying that the referenced order item belongs to the current customer, is a bundle item, is paid, or has remaining capacity — the is_bundle_scheduling() bundle discriminator is a mere !empty(order_item_id) truthiness check, and the code flow explicitly removes the customer and payment steps when this is truthy (the source even carries a TODO acknowledging the missing validation). This makes it possible for unauthenticated attackers to create approved appointments against other customers' order items and to read those customers' names, email addresses, and order codes returned in the booking confirmation.
Severity
4.3 (Medium)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| latepoint | Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress |
Affected:
0 , ≤ 5.7.2
(semver)
|
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CVE-2026-90907 (GCVE-0-2026-90907)
Vulnerability from cvelistv5 – Published: 2026-09-29 16:43 – Updated: 2026-09-30 16:10
VLAI
EPSS
VEX
Title
Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save controller in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3
Summary
Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save controller in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The profile.save controller did not check the login state of a user, allowing the creation of guest-level users on sites without active user registration.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:09 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.joomla.org/ | product |
| https://developer.joomla.org/security-centre/1082… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Joomla! Project | Joomla! CMS |
Affected:
1.5.0-5.4.8
Affected: 6.0.0-6.1.3 |
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CVE-2026-90899 (GCVE-0-2026-90899)
Vulnerability from cvelistv5 – Published: 2026-09-23 18:36 – Updated: 2026-09-23 19:36
VLAI
EPSS
VEX
Title
Joomla Extension - joomshaper.com - Unauthenticated PII Exposure via IDOR in Guest Checkout in Easy Store extension 1.0.0-3.0.0
Summary
Joomla Extension - joomshaper.com - Unauthenticated PII Exposure via IDOR in Guest Checkout in Easy Store extension 1.0.0-3.0.0 - The checkout.searchGuestUser endpoint allowed querying guest checkout records solely by supplying an email address. The server returned complete shipping details (full name, phone number, street address, city, postal code, and country) directly from the #__easystore_guests table with no authentication, session validation, or ownership checks. An unauthenticated attacker could iterate through email lists to enumerate guest customers and harvest sensitive Personally Identifiable Information (PII). Resolved by removing the unauthenticated server-side guest lookup endpoint entirely and migrating autofill functionality to client-side localStorage protected by explicit user consent.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 19:36 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.joomshaper.com/easystore | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| joomshaper.com | Easy Store extension for Joomla |
Affected:
1.0.0-3.0.0
|
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CVE-2026-90858 (GCVE-0-2026-90858)
Vulnerability from cvelistv5 – Published: 2026-09-15 03:30 – Updated: 2026-09-15 17:55
VLAI
EPSS
VEX
Title
subhajitkhan online-clinic-management-system adminappview.php session_start authorization
Summary
A flaw has been found in subhajitkhan online-clinic-management-system up to e9ee77a8827a1446220fa07ee693dc4d9a29a578. Affected by this vulnerability is the function session_start of the file adminappview.php. Executing a manipulation of the argument adminmail can lead to authorization bypass. The attack may be launched remotely. The exploit has been published and may be used. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 17:55 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403415 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403415/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90858 | third-party-advisory |
| https://vuldb.com/submit/927291 | third-party-advisory |
| https://github.com/subhajitkhan/online-clinic-man… | exploitissue-tracking |
| https://github.com/subhajitkhan/online-clinic-man… | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| subhajitkhan | online-clinic-management-system |
Affected:
e9ee77a8827a1446220fa07ee693dc4d9a29a578
cpe:2.3:a:subhajitkhan:online-clinic-management-system:*:*:*:*:*:*:*:* |
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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.