CVE Explorer
CVE-2026-12939
The Newsletters Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'link' attribute of the post_thumbnail (and newsletters_post_thumbnail) shortcodes in versions up to and including 4.15. This is due to insufficient input sanitization and output escaping in the post_thumbnail() method in helpers/shortcode.php, which concatenates the user-controlled $link shortcode attribute directly into an href attribute without esc_url() or esc_attr(). This makes it possible for aut
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Newsletters","vendor":"contrid","versions":[{"lessThanOrEqual":"4.15","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /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_v5cvssurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /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_v5cweurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /containers/cna/problemTypes/0/descriptions/0
Source references
6 source assertions{"url":"https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/shortcode.php#L327"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/shortcode.php#L337"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/shortcode.php#L782"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/includes/checkinit.php#L182"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3621582%40newsletters-lite&new=3621582%40newsletters-lite"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /containers/cna/references/5
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/2ca8ab94-45b8-4705-b23b-dbc743572121?source=cve"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:eaef7c61b553a3c406c453601a0ee345449b4f35f86a18742868fa3048ab2e0a · sha256:80868475440e54ad… · /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.