CVE-2020-10686 json
Keycloak users may be able to remove MFA from other users' devices
published 6y ago modified 4mo ago also GHSA-9695-w6h2-jpv9 , EUVD-2022-3301
- cvss
- 4.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
A flaw was found in Keycloak version 8.0.2 and 9.0.0, and was fixed in Keycloak version 9.0.1, where a malicious user registers as oneself. The attacker could then use the remove devices form to post different credential IDs and possibly remove MFA devices for other users.
Patch / fix
Is CVE-2020-10686 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2020-10686 updated cvss 4.1
keycloak: remove other users MFA devices
-
Red Hat Single Sign-On 7 rh-sso7-keycloak rh-sso7-keycloaknot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.1 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-core | <9.0.2 |
9.0.2 |
Affected products
- Keycloak keycloak
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
github.com
/keycloak/keycloak/commit/5ddd605ee96b8551c7eb00b609a0b97939925b77
web
-
bugzilla.redhat.com
/show_bug.cgi?id=CVE-2020-10686
web, issue-tracking, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-10686
advisory
-
github.com
/keycloak/keycloak
package
Sources
- CVE List CVE-2020-10686
- GitHub Advisory GHSA-9695-w6h2-jpv9
- NVD CVE-2020-10686
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