CVE-2026-5538
QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgery
- State
- Published
- Severity
- 5.3 Medium
- Published
- Apr 5, 2026
- Updated
- Apr 6, 2026
- Reserved
- Apr 4, 2026
Description
A vulnerability was detected in QingdaoU OnlineJudge up to 1.6.1. Affected by this issue is the function service_url of the file JudgeServer.service_url of the component judge_server_heartbeat Endpoint. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X | VulDB |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R | VulDB |
| 3.0 | 6.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R | VulDB |
| 2.0 | 6.5 Medium | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-918 Server-Side Request Forgery
Affected Products
| Product | Versions |
|---|---|
OnlineJudgeQingdaoU |
|
References
- VDB-355291 | QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgeryvdb-entrytechnical-description
- VDB-355291 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #782203 | QingdaoU OnlineJudge <=v1.6.1 Stored SSRFthird-party-advisory
- https://github.com/AnalogyC0de/public_exp/issues/27issue-tracking
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