EUVD-2026-41319
GHSA-7xv8-5jwr-q8vr
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Contributor authentication required (PR:L); scope changes to victim's browser context (S:C); no credible availability impact from XSS alone, so A:N.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
1DescriptionCVE.org
Contributor Cross Site Scripting (XSS) in Surbma | Yoast SEO Breadcrumb Shortcode <= 1.2 versions.
AnalysisAI
Stored Cross-Site Scripting in the Surbma Yoast SEO Breadcrumb Shortcode WordPress plugin (versions <= 1.2) allows contributor-level authenticated users to inject malicious JavaScript via the breadcrumb shortcode, which executes in the browser context of any victim who views the affected content - most critically a site administrator. The scope change (S:C) in the CVSS vector confirms the script escapes the plugin's own context and can hijack privileged sessions or perform unauthorized admin actions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to possess a valid WordPress Contributor-level account (or higher) on the targeted site - this is confirmed by the PR:L CVSS metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 6.5 (Medium) is supported by the vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has registered or compromised a Contributor account on the target WordPress site creates or edits a post that embeds a malicious JavaScript payload within a breadcrumb shortcode attribute. When a site administrator previews or publishes that post, the unescaped script executes in the admin's browser, potentially stealing the admin's session cookie or silently creating a new administrator account for persistent access. |
| Remediation | Upstream fix availability is not independently confirmed from the provided data - no exact patched version number is included in the intelligence. … 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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