CVE-2026-63178

mediumpriority · track · 0EPSS 0.005 · 43 %ileEU
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.52% (43rd) EPSS
CVSS 6.5 · medium
Is it mine?
1 products
Check your exposure
Who says so?
1 sources
enisa_euvd

EPSS · scored 2026-10-22

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/{user_group_id} and POST /manage/admin/user-group/{user_group_id}/add-users endpoints in ee/onyx/server/user_group/api.py call update_user_group and add_users_to_user_group in ee/onyx/db/user_group.py without enforcing _validate_curator_can_modify_group, allowing a curator to add accounts to arbitrary groups and obtain document access through get_acl_for_user and the OpenSearch access_control_list filter. This issue is fixed in version 4.3.0.

01

cvss

Technical severity, 0–10. One row per scoring source.

6.5
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Nsecondary · security-advisories@github.comexploitability 1.2 · impact 5.2
v3.16mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-639US
04

affected products (1)

Products and version ranges known to be affected.

05

also known as (1)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

enisa_euvdNVDCVE.orgMITRE
published 2026-08-17modified 2026-08-18
07

references (12)

External citations — patches, advisories, analysis.

scry

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