YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication
Published May 3, 2026
6.9
MEDIUMCVSS 4.0
EPSS 0.65%
Description
A security flaw has been discovered in YunaiV yudao-cloud up to 2026.01. This impacts the function getAccessToken of the file yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java. Performing a manipulation results in improper authentication. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
-
- Version 2026.01StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| YunaiV | Yudao-Cloud | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
1 other source (NVD) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
1 other source (NVD) ▾
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed May 4, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
May–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.65% (0.00654) | 49.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00414) | 32.77th | v5 (v2026.06.15) |
| May 3, 2026 | 0.08% (0.00082) | 23.79th | v4 (v2025.03.14) |
References (4)
- https://github.com/9str0IL/CVE/issues/1 exploitissue-tracking
- https://vuldb.com/submit/800866 third-party-advisory
- https://vuldb.com/vuln/360832 vdb-entrytechnical-description
- https://vuldb.com/vuln/360832/cti signaturepermissions-required
| Link | Providers | Tags |
|---|---|---|
| https://github.com/9str0IL/CVE/issues/1 | exploitissue-tracking | |
| https://vuldb.com/submit/800866 | third-party-advisory | |
| https://vuldb.com/vuln/360832 | vdb-entrytechnical-description | |
| https://vuldb.com/vuln/360832/cti | signaturepermissions-required |
Change history (0)
No recorded changes yet.