EUVD-2026-93953
GHSA-2chx-rmhw-wgr5
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:L/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
Authenticated network XXE (PR:L, AV:N, AC:L) yielding high-confidentiality file disclosure (C:H) and partial DoS (A:L); no integrity impact and scope unchanged for base scoring.
Primary rating from Vendor (arista).
CVSS VectorVendor: arista
Lifecycle Timeline
3DescriptionCVE.org
An XML External Entity (XXE) injection vulnerability in the WiFi-server Spectralight application allows any authenticated user to send malicious requests, leading to arbitrary local file disclosure and partial denial of service.
AnalysisAI
Authenticated users of the Arista Spectralight WiFi-server application can submit crafted XML requests that trigger external-entity resolution and disclose arbitrary local files from the server, with a secondary partial denial-of-service effect from entity processing. Exploitation requires valid credentials (CVSS 4.0 vector shows PR:L; the independent assessment concurs with PR:L) and network reach to an XML-accepting endpoint, so the realistic threat population is insiders or attackers who have already obtained an account rather than unauthenticated internet scanners. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to be an authenticated user of the Arista Spectralight WiFi-server (PR:L) and to reach an endpoint that accepts XML input which is parsed with external-entity resolution enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a moderate-severity, authentication-gated information-disclosure flaw rather than a top-tier emergency. … 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 | Patch status is not established from the available input; the authoritative fix information is Arista Security Advisory 0190 (https://www.arista.com/en/support/advisories-notices/security-advisory/24806-security-advisory-0190), which should be consulted for the exact remediated release before applying any upgrade - no fixed version number is asserted here. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all instances of the Arista Spectralight WiFi-server application (all versions) in the environment, restrict network access to XML-accepting endpoints to trusted internal users only, and enable detailed logging for XML parsing errors and anomalous file access. …
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External POC / Exploit Code
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