EUVD-2026-67900
GHSA-4qgr-qvc8-p8wf
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Network-accessible stored XSS requiring contributor auth (PR:L) and admin view (UI:R); scope change to victim browser justifies S:C with low C/I impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
WordPress plugin (Spiffy Plugin) before 5.0.9 is affected by Stored Cross-Site Scripting in Event Title field. An authenticated attacker with the lowest privileged role (contributor) can exploit this to redirect user to malicious site or control the account.
AnalysisAI
Stored Cross-Site Scripting in the Spiffy Calendar WordPress plugin (before version 5.0.9) allows an authenticated attacker holding the lowest standard WordPress role (contributor) to inject malicious script via the Event Title field. When a higher-privileged user - such as an administrator or editor - subsequently views the affected event listing, the payload executes in their browser context, enabling session hijacking, credential theft, or redirection to attacker-controlled infrastructure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated WordPress session with at minimum the contributor role - unauthenticated exploitation is not possible per the CVSS PR:L metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate-low. … 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 | Update the Spiffy Calendar WordPress plugin to version 5.0.9 or later, which resolves this stored XSS vulnerability. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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