EUVD-2026-63814
GHSA-qmfm-8v44-p8r3
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Publicly accessible callback URL requires no authentication or complexity; impact limited to order status integrity with no confidentiality or availability effect.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
4DescriptionCVE.org
The Tamara Checkout WordPress plugin through 1.9.9.20 does not verify the order key, a nonce, or any capability on its public payment cancel/fail return URLs, changing a WooCommerce order's status based solely on an attacker-supplied numeric order id, so an unauthenticated attacker can cancel or fail arbitrary orders store-wide by enumerating ids (triggering downstream stock-release and notification side-effects).
AnalysisAI
Missing authorization on the Tamara Checkout WordPress plugin's public payment cancel/fail return URLs allows any unauthenticated remote attacker to cancel or fail arbitrary WooCommerce orders store-wide simply by enumerating sequential numeric order IDs. The plugin through version 1.9.9.20 performs no verification of the WooCommerce order key, a WordPress nonce, or any user capability before acting on the supplied ID, making mass order disruption trivial to automate. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions beyond network reachability of the WordPress site. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 (Medium) score with AV:N/AC:L/PR:N/UI:N accurately reflects the near-zero exploitation friction: the attack is unauthenticated, network-accessible, and requires no complexity. … 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 exact patched version number is confirmed in the available data - operators should check the WordPress plugin repository and the WPScan advisory at https://wpscan.com/vulnerability/e026c89e-83cc-452c-bfb9-2630f1ade284/ for an updated release. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today