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UnPoller EUVDEUVD-2026-66662

| CVE-2026-36851 HIGH
Path Traversal (CWE-22)
2026-08-26 mitre GHSA-49v2-hj2q-248f
7.5
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
7.5 HIGH

Password field exposed via network-reachable endpoint with no authentication required; arbitrary file read yields high confidentiality impact with no integrity or availability effect.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Aug 27, 2026 - 22:42 vuln.today
CVSS changed
Aug 27, 2026 - 20:37 NVD
7.5 (HIGH)
CVE Published
Aug 26, 2026 - 00:00 cve.org
HIGH 7.5
CVE Published
Aug 26, 2026 - 00:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Path traversal vulnerability in UnPoller 2.33.0 password field allows arbitrary file read and network exfiltration.

AnalysisAI

Path traversal in UnPoller 2.33.0's password field enables unauthenticated remote attackers to read arbitrary files from the host filesystem and exfiltrate their contents over the network. The CVSS 7.5 (High) vector reflects a fully network-accessible, zero-authentication attack with high confidentiality impact against the affected version. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Exploitation requires network reachability to the UnPoller 2.33.0 service - specifically to the endpoint or interface that exposes the password field vulnerable to path traversal. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.5 score is driven by a network-accessible, unauthenticated, low-complexity attack vector with high confidentiality impact - on paper an urgent priority. … 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 - no fixed version number is stated in any available reference, and the NVD/EUVD records contain no patch metadata. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct a complete inventory of UnPoller 2.33.0 deployments and implement network access restrictions limiting connections to authorized administrators only; immediately verify file system permissions and review access logs. …

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EUVD-2026-66662 vulnerability details – vuln.today

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