CVE-2026-3965 (GCVE-0-2026-3965)
Vulnerability from cvelistv5 – Published: 2026-03-11 23:32 – Updated: 2026-03-12 13:27 X_Open SourceTitle
whyour qinglong API express.ts protection mechanism
Summary
A security vulnerability has been detected in whyour qinglong up to 2.20.1. Affected is an unknown function of the file back/loaders/express.ts of the component API Interface. The manipulation of the argument command leads to protection mechanism failure. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.20.2 is able to address this issue. The identifier of the patch is 6bec52dca158481258315ba0fc2f11206df7b719. It is advisable to upgrade the affected component. The code maintainer was informed beforehand about the issues. He reacted very fast and highly professional.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-12 13:27 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.350394 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.350394 | signaturepermissions-required |
| https://vuldb.com/?submit.768861 | third-party-advisory |
| https://github.com/A7cc/cve/issues/6 | issue-tracking |
| https://github.com/whyour/qinglong/pull/2941 | issue-trackingpatch |
| https://github.com/A7cc/cve/issues/6#issue-3999235307 | exploitissue-tracking |
| https://github.com/whyour/qinglong/commit/6bec52d… | patch |
| https://github.com/whyour/qinglong/releases/tag/v2.20.2 | patch |
| https://github.com/whyour/qinglong/ | product |
Impacted products
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 257c2934-0c5e-46bc-a1a6-bec5782e8c26
Exploited: Yes
Characteristics
Severity:
63.0
Timestamps
First Seen: 2026-04-06
Asserted: 2026-04-06
Last Seen: 2026-10-13
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: whyour / qinglong | Class: device-management-platform | Severity: Medium (CVSS 6.3) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-10-13: 6
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 3 |
|---|---|
| Iot | no |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | device-management-platform |
| 7D Avg | 0 |
| Vendor | whyour |
| 30D Avg | 0 |
| 90D Avg | 0 |
| Product | qinglong |
| Cisa Kev | no |
| Connections | 6 |
| Observation Date | 2026-10-13 |
| Vulnerability Class | CVSS |
| Vulnerability Score | 6.3 |
| Vulnerability Severity | Medium |
References
Created: 2026-07-01 07:18 UTC
| Updated: 2026-10-21 09:13 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d2a15643-613f-44c5-9d8e-f8f92c077a0d
Exploited: Yes
Timestamps
First Seen: 2026-04-10
Asserted: 2026-04-10
Scope
Notes: KEVIntel entry: whyour qinglong API express.ts protection mechanism | Affected: whyour / qinglong | CVSS: 5.3 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | whyour qinglong API express.ts protection mechanism |
| Vendor | whyour |
| Product | qinglong |
| Added Date | 2026-04-10T00:00:00.000Z |
| Cvss Score | 5.3 |
| Epss Score | None |
| Cvss Severity | MEDIUM |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-19 12:42 UTC
| Updated: 2026-06-19 12:42 UTC
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"tags": [
"x_open-source"
],
"timeline": [
{
"lang": "en",
"time": "2026-03-11T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-03-11T01:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-03-11T14:19:25.000Z",
"value": "VulDB entry last update"
}
],
"title": "whyour qinglong API express.ts protection mechanism"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-3965",
"datePublished": "2026-03-11T23:32:09.955Z",
"dateReserved": "2026-03-11T13:14:22.026Z",
"dateUpdated": "2026-03-12T13:27:53.420Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.