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.
2790 vulnerabilities reference this CWE, most recent first.
CVE-2026-87829 (GCVE-0-2026-87829)
Vulnerability from cvelistv5 – Published: 2026-09-17 07:54 – Updated: 2026-09-17 12:09- CWE-639 - Authorization Bypass Through User-Controlled Key
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/8c76bf99-5d3e-45… | exploitvdb-entrytechnical-description |
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | Checkout Field Manager (Checkout Manager) for WooCommerce |
Affected:
7.8.6 , < 7.9.7
(semver)
|
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CVE-2026-87809 (GCVE-0-2026-87809)
Vulnerability from cvelistv5 – Published: 2026-09-09 11:20 – Updated: 2026-09-18 17:23- CWE-639 - Authorization Bypass Through User-Controlled Key
| URL | Tags |
|---|---|
| https://github.com/siyuan-note/siyuan/security/ad… | vendor-advisory |
| https://www.vulncheck.com/advisories/siyuan-befor… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| siyuan-note | siyuan |
Affected:
0 , < 3.8.2
(semver)
Unaffected: 3.8.2 (semver) cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* |
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CVE-2026-87739 (GCVE-0-2026-87739)
Vulnerability from cvelistv5 – Published: 2026-09-24 06:46 – Updated: 2026-10-13 04:12- CWE-639 - Authorization bypass through User-Controlled key
| Vendor | Product | Version | |
|---|---|---|---|
| PaperCut | PaperCut NG/MF |
Affected:
0 , < 24.1.10
(semver)
Affected: 25.0.0 , < 25.0.13 (semver) Affected: 26.0.0 , < 26.0.5 (semver) |
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CVE-2026-87113 (GCVE-0-2026-87113)
Vulnerability from cvelistv5 – Published: 2026-09-16 19:42 – Updated: 2026-09-17 16:09- CWE-639 - Authorization Bypass Through User-Controlled Key
| Vendor | Product | Version | |
|---|---|---|---|
| Tanium | Threat Response |
Affected:
4.9 , < 4.9.449
(custom)
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CVE-2026-87108 (GCVE-0-2026-87108)
Vulnerability from cvelistv5 – Published: 2026-10-09 05:54 – Updated: 2026-10-09 16:47- CWE-639 - Authorization Bypass Through User-Controlled Key
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | Ops Manager |
Affected:
7.0.0 , ≤ 7.0.23
(semver)
Affected: 8.0.0 , < 8.0.27 (semver) |
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CVE-2026-87098 (GCVE-0-2026-87098)
Vulnerability from cvelistv5 – Published: 2026-10-28 10:09 – Updated: 2026-11-06 18:38| URL | Tags |
|---|---|
| https://security-advisory.acronis.com/advisories/… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Acronis | Acronis Cyber Protect 17 |
Affected:
unspecified , < 42587
(semver)
|
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CVE-2026-87047 (GCVE-0-2026-87047)
Vulnerability from cvelistv5 – Published: 2026-09-09 02:06 – Updated: 2026-09-09 16:10- CWE-639 - Authorization Bypass Through User-Controlled Key
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CVE-2026-87033 (GCVE-0-2026-87033)
Vulnerability from cvelistv5 – Published: 2026-09-09 02:08 – Updated: 2026-09-09 16:10- CWE-639 - Authorization Bypass Through User-Controlled Key
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CVE-2026-87025 (GCVE-0-2026-87025)
Vulnerability from cvelistv5 – Published: 2026-09-09 02:07 – Updated: 2026-09-09 16:10- CWE-639 - Authorization Bypass Through User-Controlled Key
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CVE-2026-87019 (GCVE-0-2026-87019)
Vulnerability from cvelistv5 – Published: 2026-09-09 02:06 – Updated: 2026-09-09 16:10- CWE-639 - Authorization Bypass Through User-Controlled Key
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Mitigation
For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
Mitigation
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
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.