CVE Explorer

CVE-2026-4335

The ShortPixel Image Optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the attachment post_title in all versions up to, and including, 6.4.3. This is due to insufficient output escaping in the getEditorPopup() function and its corresponding media-popup.php template. Specifically, the attachment's post_title is retrieved from the database via get_post() in AjaxController.php (line 435) and passed directly to the view template (line 449), where it is rendered into an

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:105c94a394dbaeee38ca4aa45b8f08dd2be0d910f3d044c0c582330bd4f45b4c

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF","vendor":"shortpixel","versions":[{"lessThanOrEqual":"6.4.3","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":5.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /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:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions

{"url":"https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.3/class/Controller/AjaxController.php#L449"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/references/4

{"url":"https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/tags/6.4.3/class/view/snippets/media-popup.php#L139"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/references/2

{"url":"https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/trunk/class/Controller/AjaxController.php#L449"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/references/3

{"url":"https://plugins.trac.wordpress.org/browser/shortpixel-image-optimiser/trunk/class/view/snippets/media-popup.php#L139"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/references/1

{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3490270%40shortpixel-image-optimiser&new=3490270%40shortpixel-image-optimiser&sfp_email=&sfph_mail="}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /containers/cna/references/5

{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/a156234f-2644-4d17-aaa5-4f088cf48f73?source=cve"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2a80558b904715d324ddf816eef9e53b7030b65374e4489ae4506dd71ddf615e · sha256:cc571b690f9c4c41… · /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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