CVE-2024-21632 json
omniauth-microsoft_graph vulnerable to account takeover (nOAuth)
published 2024-01-02 2 y ago modified 2026-09-10 1 mo ago also GHSA-5g66-628f-7cvj , EUVD-2024-0260
- cvss
- 8.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
omniauth-microsoft_graph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, the implementation did not validate the legitimacy of the `email` attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases when the `email` is used as a trusted user identifier. This could lead to account takeover. Version 2.0.0 contains a fix for this issue.
Patch / fix
- rubygems omniauth-microsoft_graph 2.0.0
- recognizeapp omniauth::microsoftgraph 2.0.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.90% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- descope.com https://www.descope.com/blog/post/noauth referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | omniauth-microsoft_graph | <2.0.0 |
2.0.0 |
Affected products
- synth omniauth-microsoft_graph
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/synth/omniauth-microsoft_graph/commit/f132078389612b797c872b45bd0e0b47382414c1
web, patch
-
github.com
/synth/omniauth-microsoft_graph/commit/5ffd62690ca0e46978f2fc7d83b18d28edde7795
web
-
descope.com
/blog/post/noauth
web, exploit
-
github.com
/synth/omniauth-microsoft_graph/security/advisories/GHSA-5g66-628f-7cvj
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2024-21632
advisory
-
github.com
/synth/omniauth-microsoft_graph
package
Sources
- CVE List CVE-2024-21632
- GitHub Advisory GHSA-5g66-628f-7cvj
- NVD CVE-2024-21632
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