CVE-2026-3965
High PUBLISHEDwhyour qinglong API express.ts protection mechanism
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Mar 11, 2026
- Exploitation Reported
- Apr 10, 2026
- CVSS
- 5.3 Medium
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| whyour |
qinglong
|
2.20.0 |
Affected |
| whyour |
qinglong
|
2.20.1 |
Affected |
| whyour |
qinglong
|
2.20.2 |
Unaffected |
CVE References
- GitHub — whyour/qinglong github.com · Patch https://github.com/whyour/qinglong/pull/2941
- GitHub — whyour/qinglong github.com · Patch https://github.com/whyour/qinglong/commit/6bec52dca158481258315ba0fc2...
- GitHub — whyour/qinglong github.com · Patch https://github.com/whyour/qinglong/releases/tag/v2.20.2
- Submit #768861 | qinglong v2.20.1 Remote Command Execution vuldb.com · Third-Party Advisory https://vuldb.com/?submit.768861
- GitHub — A7cc/cve github.com · Exploit https://github.com/A7cc/cve/issues/6#issue-3999235307
Show 4 more references
- VDB-350394 | whyour qinglong API express.ts protection mechanism vuldb.com · Technical Description https://vuldb.com/?id.350394
- GitHub — A7cc/cve github.com · Issue Tracking https://github.com/A7cc/cve/issues/6
- GitHub — whyour/qinglong github.com · Product https://github.com/whyour/qinglong/
- VDB-350394 | CTI Indicators (IOB, IOC, IOA) vuldb.com · Signature https://vuldb.com/?ctiid.350394
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2026-04-10 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
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:P
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Exploitation Status
Exploited in the wild
Recorded 2026-04-10 00:00:00 UTC · The Shadowserver
Weaknesses (CWE)
-
Protection Mechanism Failure
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC 3 months ago00:00 UTC · 3 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
23:32 UTC 4 months ago23:32 UTC · 4 months ago
CVE published
Vulnerability disclosed publicly
-
13:14 UTC 4 months ago13:14 UTC · 4 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-3965
{
"cve_id": "CVE-2026-3965",
"title": "whyour qinglong API express.ts protection mechanism",
"affected_vendor": "whyour",
"affected_product": "qinglong",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 5.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}