CVE Explorer

CVE-2026-8868

The Single Mailchimp plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'single-mailchimp' shortcode in all versions up to, and including, 1.4. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes (autocomplete, label, placeholder, btn_text, success_msg, error_msg) which are concatenated directly into HTML output by the single_mailchimp() function in shortcodes.php. This makes it possible for authenticated attackers, with

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9a2e80deefee8c03b0b45e1d535edd721523edad683a2d4471a0e2d518ede319

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Single Mailchimp","vendor":"jonathan-robrecht","versions":[{"lessThanOrEqual":"1.4","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:5966c32ad2b99a06b66fafe80bf8722d3be613fee7afc95d961a5cbecdf5e408 · sha256:1bc69b38de681619… · /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:v2:5966c32ad2b99a06b66fafe80bf8722d3be613fee7afc95d961a5cbecdf5e408 · sha256:1bc69b38de681619… · /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:v2:5966c32ad2b99a06b66fafe80bf8722d3be613fee7afc95d961a5cbecdf5e408 · sha256:1bc69b38de681619… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"url":"https://plugins.trac.wordpress.org/browser/single-mailchimp/trunk/shortcodes.php#L23"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5966c32ad2b99a06b66fafe80bf8722d3be613fee7afc95d961a5cbecdf5e408 · sha256:1bc69b38de681619… · /containers/cna/references/1

{"url":"https://plugins.trac.wordpress.org/browser/single-mailchimp/trunk/shortcodes.php#L9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5966c32ad2b99a06b66fafe80bf8722d3be613fee7afc95d961a5cbecdf5e408 · sha256:1bc69b38de681619… · /containers/cna/references/2

{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/070616c9-b6a3-43d9-a82d-5cbcffc39ad9?source=cve"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5966c32ad2b99a06b66fafe80bf8722d3be613fee7afc95d961a5cbecdf5e408 · sha256:1bc69b38de681619… · /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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