The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink) in all versions up to, and including, 1.3.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the site operator to have enabled guest post submission via the [fpsm] shortcode, which registers a publicly accessible AJAX handler gated only by a nonce emitted on every page containing the shortcode.
CVE-2026-96649
HIGHPre-NVD 7.27.2—Trending — 4 sources updated this week
EchelonGraph scoreHIGH confidence
Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-30. A secondary CVSS source baseline 7.2; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.2EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.2Exploit: None knownExposed services: Not assessed
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 7.2
- EG Score
- 7.2HIGHhigh confidence
- EG Risk
- 47EG Risk 47/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity72% × 45%Exploitation0% × 40%Automatability100% × 15%CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix. - EPSS PROB
- 0.2%
- EPSS %ILE
- 14th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
September 30, 2026
Last Modified
September 30, 2026
References (8)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-fileuploader.js#L578
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-fileuploader.js#L583
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-frontend.js#L40
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/classes/class-fpsml-library.php#L112
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/cores/ajax-process-form.php#L161
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/cores/ajax-process-form.php#L5
- security@wordfencehttps://plugins.trac.wordpress.org/browser/frontend-post-submission-manager-lite/tags/1.3.5/
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/0af8ff06-68e2-4a0c-9de4-d06a6a2e86c9?source=cve
Vendor Advisories for CVE-2026-96649(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 26× in last 7d / 26× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-04 23:43 UTCEG score recompute
- 2026-10-04 23:43 UTCGHSA enrichment
- 2026-10-04 23:23 UTCEPSS rescore
- 2026-10-04 10:50 UTCGHSA enrichment
- 2026-10-03 21:55 UTCEG score recompute
- 2026-10-03 21:54 UTCGHSA enrichment
- 2026-10-03 14:26 UTCEPSS rescore
- 2026-10-03 08:54 UTCGHSA enrichment
- 2026-10-02 20:01 UTCEG score recompute
- 2026-10-02 20:00 UTCGHSA enrichment
- 2026-10-02 17:57 UTCEPSS rescore
- 2026-10-02 07:06 UTCEG score recompute
- 2026-10-02 07:06 UTCGHSA enrichment
- 2026-10-01 19:51 UTCEPSS rescore
- 2026-10-01 18:13 UTCGHSA enrichment
- 2026-10-01 05:17 UTCGHSA enrichment
- 2026-09-30 16:24 UTCEG score recompute
- 2026-09-30 16:24 UTCGHSA enrichment
- 2026-09-30 15:44 UTCEG score recompute
- 2026-09-30 15:44 UTCGHSA enrichment
- 2026-09-30 15:04 UTCEPSS rescore
- 2026-09-30 14:30 UTCEG score recompute
- 2026-09-30 14:30 UTCGHSA enrichment
- 2026-09-30 03:18 UTCEG score recompute
- 2026-09-30 02:40 UTCEG score recompute
Show 1 moreShow fewer
- 2026-09-30 02:39 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-96649?
CVE-2026-96649 is a high vulnerability published on September 30, 2026. The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink) in all versions up to, and including, 1.3.4 due to insufficient input sanitization and output…
When was CVE-2026-96649 disclosed?
CVE-2026-96649 was first published on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-96649 actively exploited?
CVE-2026-96649 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96649?
CVE-2026-96649 has a CVSS base score of 7.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-96649?
No fix for CVE-2026-96649 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-96649 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-96649
Is Your Infrastructure Affected by CVE-2026-96649?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.