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TabaPay Gateway CVE-2026-18031

| EUVDEUVD-2026-62276 CRITICAL
Improper Authentication (CWE-287)
2026-08-19 contact@wpscan.com GHSA-37mv-8m3x-7xq5
9.8
CVSS 3.1 · Vendor: wpscan
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Severity by source

Vendor (wpscan) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
9.8 CRITICAL

Unauthenticated network attacker abuses an unvalidated callback (PR:N/UI:N/AC:L) to gain an administrator session, yielding full site control, so C/I/A are all High.

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

Primary rating from Vendor (wpscan).

CVSS VectorVendor: wpscan

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Aug 19, 2026 - 19:30 vuln.today
CVSS changed
Aug 19, 2026 - 17:22 NVD
9.8 (CRITICAL)
CVE Published
Aug 19, 2026 - 06:17 cve.org
CRITICAL 9.8
CVE Published
Aug 19, 2026 - 06:17 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

The TabaPay Gateway WordPress plugin through 1.4.0 does not validate the payment callback before establishing a session for the account associated with the referenced order, allowing unauthenticated attackers to log in as any registered user, including an administrator.

AnalysisAI

Authentication bypass in the TabaPay Gateway WordPress plugin (versions through 1.4.0) lets unauthenticated remote attackers log in as any registered user - including administrators - by abusing the payment callback handler. Because the plugin establishes a session for the account tied to a referenced order without validating the payment callback's authenticity, an attacker who can reach the callback endpoint can impersonate arbitrary accounts. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the TabaPay Gateway plugin (≤1.4.0) is installed and active and that its payment callback endpoint is reachable by the attacker - which it is by design, since payment processors post callbacks over the network. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The signals are mixed but lean toward genuine priority for anyone running this plugin. … 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 - the data only bounds the vulnerability as affecting versions through 1.4.0 with no confirmed fixed version, so monitor the WordPress.org plugin page and the WPScan advisory (https://wpscan.com/vulnerability/6576dcd1-aea6-47c0-9157-4ca56f426612/) for a release above 1.4.0 and upgrade as soon as one appears. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: immediately deactivate the TabaPay Gateway plugin on all WordPress installations running version 1.4.0 or earlier. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-18031 vulnerability details – vuln.today

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