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CVE-2026-8891

The BitForm plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bitform' shortcode in versions up to, and including, 1.1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('width' and 'height') in the Shortcode::shortcode() function, which are interpolated directly into the 'style' attribute of an <iframe> element. This makes it possible for authenticated attackers, with contributor-level access and above,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fe2ca93bed92c610484ba40e80c319c8be51cf06206677bbf9fa7d61a36d0732
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"BitForm – Data management solution for WordPress","vendor":"bitform","versions":[{"lessThanOrEqual":"1.1.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /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:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /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:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/Common/Shortcode.php#L13"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/Common/Shortcode.php#L17"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/index.php#L54"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /containers/cna/references/3
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/71167dec-38ec-4eb3-8fab-25eca0f8b071?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:95f32137e7a7c26e9922702f0de41e04f977e22494b404c166316284352f3c1d · sha256:f6d53c8f83262560… · /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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