EUVD-2026-81033
GHSA-fh4q-3fgx-3j67
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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
Network-reachable authenticated endpoint (PR:L) with trivial identifier tampering (AC:L); cross-tenant read yields C:H, but no write or availability impact (I:N/A:N) and same security scope (S:U).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
ArcherySec through 2.0.6 fails to validate organization ownership in the WebScanVulnList endpoint, allowing authenticated users to read vulnerability findings from other organizations. Attackers can supply arbitrary scan identifiers to retrieve complete web vulnerability data including titles, severities, statuses, and analyst notes from other tenants.
AnalysisAI
Cross-tenant information disclosure in ArcherySec through 2.0.6 allows any authenticated user to read web vulnerability findings belonging to other organizations by supplying arbitrary or enumerated scan identifiers to the WebScanVulnList endpoint, which performs no organization-ownership check. Rated 7.1 (CVSS 4.0) and mapped to CWE-639, the flaw is a classic IDOR/BOLA: exploitation is remote and low-complexity and requires only a valid low-privilege login (PR:L per the assessed vector), with impact confined to confidentiality (full read of titles, severities, statuses and analyst notes) and no modification or denial of service. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated ArcherySec account (PR:L) on an instance running a multi-tenant/multi-organization deployment - the flaw is cross-tenant, so a single-organization install has no other tenants to read from. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor CVSS 4.0 vector (7.1, AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N) describes an authenticated, network-reachable, low-complexity confidentiality-only flaw - a classic CWE-639 IDOR/BOLA where the WebScanVulnList endpoint accepts arbitrary scan identifiers without an organization-ownership check. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis, and no fixed version number is given in the available references, so administrators should track https://github.com/archerysec/archerysec/issues/676 and the repository at https://github.com/archerysec/archerysec for a release beyond 2.0.6 and upgrade as soon as one is published (see also the VulnCheck advisory https://www.vulncheck.com/advisories/archerysec-through-2.0.6-information-disclosure-via-webscanvulnlist for updated status). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify every ArcherySec instance in the estate and determine which are multi-tenant (hosting more than one organization) versus single-tenant; for any multi-tenant deployment, treat this as an active exposure and either restrict network access to trusted administrative networks or take the shared instance out of service for external tenant use until mitigations are in place. …
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