Privilege escalation via legacy access group creation endpoint
Summary
| CVE | CVE-2026-88817 |
|---|---|
| State | PUBLISHED |
| Assigner | airbus |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-16 13:18:07 UTC |
| Updated | 2026-09-18 17:47:52 UTC |
| Description | An authenticated, non-guest user of Curiosity Workspace could enroll themselves as an administrator and member of an existing access group without an invitation or approval. It did not grant application-wide administrator privileges, and the vulnerability could not be used to obtain root access to the application or its underlying host. |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from [email protected]
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.002720000 probability, percentile 0.198570000 (date 2026-09-18)
Problem Types: CWE-269 | CWE-284 | CWE-269 CWE-269 Improper Privilege Management | CWE-284 CWE-284 Improper Access Control
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Curiosity GmbH | Curiosity Workspace | affected 26.8.70362 semver | Not specified |
| CNA | Curiosity GmbH | Curiosity Workspace | unaffected 26.8.70363 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| docs.curiosity.ai/security/advisories/cve-2026-88817 | [email protected] | docs.curiosity.ai | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: DELANNOY Marc-Antoine [Airbus Protect] - <[email protected]> (en)
Additional Advisory Data
Solutions
CNA: The following updates will fix this vulnerability: * Curiosity Workplace =>26.8.70363