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Open Web Analytics CVE-2026-97865

| EUVDEUVD-2026-87090 MEDIUM
Deserialization of Untrusted Data (CWE-502)
2026-09-25 VulDB GHSA-j84g-3jrc-vgcr
PHP Deserialization N A Open Web Analytics
6.9
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
vuln.today AI
6.5 MEDIUM

Remote unauthenticated endpoint yields only queue-state manipulation (I:L/A:L); the object-injection path needs a separate DB/log write foothold, so C:N and no RCE credited remotely.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 25, 2026 - 14:06 vuln.today

DescriptionCVE.org

A security flaw has been discovered in Open-Web-Analytics up to 1.8.1. Affected is the function Event::loadFromArray of the file queue.php of the component Remote Event Queue Endpoint. Performing a manipulation results in deserialization. The attack can be initiated remotely. Upgrading to version 1.8.2 is able to address this issue. The patch is named 78c1222ec0e2119d84684032da1541120a2cdd23. The affected component should be upgraded.

AnalysisAI

Remote manipulation of Open Web Analytics through 1.8.1 queue bookkeeping is possible through the Remote Event Queue endpoint when event forwarding is enabled, allowing an unauthenticated network attacker to collide with queue-item primary keys, set far-future delivery timestamps, or preload retry counters. The broader CWE-502 object-injection primitive is not reachable solely by an unauthenticated HTTP caller because the vendor patch confirms HTTP input cannot name a class for unserialize; full deserialization exploitation requires an attacker who can already write to the owa_queue_item table or the queue log file, such as via SQL injection, stolen database credentials, or a restored/tampered table. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
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Vulnerability AssessmentAI

Exploitation Requires network reachability to Open Web Analytics' Remote Event Queue endpoint (queue.php / HttpEventQueue forwarder), which must be deployed/enabled for event forwarding between instances. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The input assigns CVSS 4.0 6.9 (AV:N/AC:L/PR:N/UI:N with VC:L/VI:L/VA:L) and CWE-502, and the tags label this a remote PHP deserialization flaw - a framing that sounds like unauthenticated object-injection RCE. … 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 Upgrade to Open Web Analytics 1.8.2 (vendor-released patch: 1.8.2), which contains commit 78c1222ec0e2119d84684032da1541120a2cdd23 and adds unserialize() allowed_classes allowlisting plus an Event property allowlist. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-97865 vulnerability details – vuln.today
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