CVE-2026-11363

MEDIUMPre-NVD 6.66.6—
EchelonGraph scoreHIGH confidence

Score 6.6 from GitHub Security Advisory published 2026-09-09. a secondary CVSS source baseline 6.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.6 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. The deserialization is triggered automatically during form import when WPN_Helper::build_nf_cache() invokes $action->get_settings() immediately after the crafted form is imported, requiring no further interaction beyond the import action itself.

CVSS v3
6.6
EG Score
6.6(high)
EG Risk
30(Track)
EG Risk 30/100SSVC: Track

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 computed
Severity66% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 9, 2026

References (10)

Vendor Advisories for CVE-2026-11363(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 14× in last 7d / 38× 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.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-20 13:58 UTCGHSA enrichment
  3. 2026-09-19 16:17 UTCEG score recompute
  4. 2026-09-19 16:17 UTCGHSA enrichment
  5. 2026-09-18 19:27 UTCEPSS rescore
  6. 2026-09-18 18:35 UTCGHSA enrichment
  7. 2026-09-17 20:46 UTCEG score recompute
  8. 2026-09-17 20:46 UTCGHSA enrichment
  9. 2026-09-16 23:04 UTCEG score recompute
  10. 2026-09-16 23:04 UTCGHSA enrichment
  11. 2026-09-16 05:14 UTCEPSS rescore
  12. 2026-09-16 01:21 UTCGHSA enrichment
  13. 2026-09-15 03:39 UTCEG score recompute
  14. 2026-09-15 03:39 UTCGHSA enrichment
  15. 2026-09-14 05:58 UTCEG score recompute
  16. 2026-09-14 05:58 UTCGHSA enrichment
  17. 2026-09-13 16:46 UTCEPSS rescore
  18. 2026-09-13 08:16 UTCEG score recompute
  19. 2026-09-13 08:16 UTCGHSA enrichment
  20. 2026-09-12 15:00 UTCEPSS rescore
  21. 2026-09-12 10:35 UTCEG score recompute
  22. 2026-09-12 10:35 UTCGHSA enrichment
  23. 2026-09-11 14:52 UTCEPSS rescore
  24. 2026-09-11 12:53 UTCEG score recompute
  25. 2026-09-11 12:53 UTCGHSA enrichment
Show 13 more
  1. 2026-09-11 09:36 UTCEPSS rescore
  2. 2026-09-10 15:11 UTCEG score recompute
  3. 2026-09-10 15:11 UTCGHSA enrichment
  4. 2026-09-10 09:34 UTCEPSS rescore
  5. 2026-09-09 17:30 UTCEG score recompute
  6. 2026-09-09 17:29 UTCGHSA enrichment
  7. 2026-09-09 16:41 UTCEG score recompute
  8. 2026-09-09 16:41 UTCGHSA enrichment
  9. 2026-09-09 15:51 UTCEG score recompute
  10. 2026-09-09 15:51 UTCGHSA enrichment
  11. 2026-09-09 04:37 UTCEG score recompute
  12. 2026-09-09 03:42 UTCEG score recompute
  13. 2026-09-09 03:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11363?
CVE-2026-11363 is a medium vulnerability published on September 9, 2026. The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.6 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and…
When was CVE-2026-11363 disclosed?
CVE-2026-11363 was first published in the National Vulnerability Database on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11363 actively exploited?
CVE-2026-11363 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.1% of all scored CVEs.
What is the CVSS score of CVE-2026-11363?
CVE-2026-11363 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2026-11363?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11363, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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