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CVE-2026-1293

The Yoast SEO – Advanced SEO with real-time guidance and built-in AI plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the `yoast-schema` block attribute in all versions up to, and including, 26.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:15cbdb7e9b27b55521e7e60d59eabebb7c96bbeea1dded731b9f7718f3bcf357
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Yoast SEO – Advanced SEO with real-time guidance and built-in AI","vendor":"yoast","versions":[{"lessThanOrEqual":"26.8","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/26.8/inc/class-wpseo-utils.php#L915"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/26.8/src/generators/schema-generator.php#L188"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/26.8/src/presenters/schema-presenter.php#L49"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/references/1
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/8b2e7c2d-ed2f-439b-9cee-f2e5d46121b6?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ef994cc96f57f4543368d16c7cb83bab71910fb0a4dbdf99de627cd5a37f482 · sha256:25cd4d8f2d8bfc6b… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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