CVE-2026-47266

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m, epss
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.7Exploit: NoneExposed: 0

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

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.21 and 3.1.26, unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission. This vulnerability is fixed in 2.2.21 and 3.1.26.

CVSS v3
8.7
EG Score
8.7(medium)
EPSS
23.1%
KEV
Not listed

Published

May 29, 2026

Last Modified

May 29, 2026

Advisory Details (3)

Auto-updated Jun 3, 2026
Patch available. Sources: github, github_release.
github_release Patch Available

3.1.26

Patch available: verbb/formie 3.1.26

https://github.com/verbb/formie/releases/tag/3.1.26
github_release Patch Available

2.2.21

Patch available: verbb/formie 2.2.21

https://github.com/verbb/formie/releases/tag/2.2.21
github Patch Available

Unauthenticated front-end submission editing can overwrite existing submissions · Advisory · verbb/formie · GitHub

https://github.com/verbb/formie/security/advisories/GHSA-pgxq-p76c-x9cg

Vendor Advisories for CVE-2026-47266(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
verbb/formie1.0.0 ... 2.2.9 (326 versions)2.2.21—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 59× 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.

Showing the most recent 100 of 119 total refreshes for this CVE.

  1. 2026-07-16 01:50 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-14 13:59 UTCEG score recompute
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  8. 2026-07-11 17:26 UTCEG score recompute
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  1. 2026-06-29 14:06 UTCEPSS rescore
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  8. 2026-06-27 17:09 UTCEG score recompute
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  25. 2026-06-19 19:26 UTCEPSS rescore
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  27. 2026-06-18 22:45 UTCEG score recompute
  28. 2026-06-18 17:52 UTCEPSS rescore
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  30. 2026-06-18 10:18 UTCEG score recompute
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  37. 2026-06-15 17:49 UTCEPSS rescore
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  39. 2026-06-15 12:39 UTCEG score recompute
  40. 2026-06-15 00:09 UTCEG score recompute
  41. 2026-06-14 23:18 UTCEPSS rescore
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  48. 2026-06-12 22:22 UTCEG score recompute
  49. 2026-06-12 09:57 UTCEG score recompute
  50. 2026-06-11 21:32 UTCEG score recompute
  51. 2026-06-11 14:00 UTCEPSS rescore
  52. 2026-06-11 09:07 UTCEG score recompute
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  58. 2026-06-09 19:50 UTCEG score recompute
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  67. 2026-06-07 05:43 UTCEG score recompute
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  71. 2026-06-06 04:53 UTCEG score recompute
  72. 2026-06-05 22:47 UTCEPSS rescore
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  74. 2026-06-05 06:10 UTCEPSS rescore
  75. 2026-06-05 06:10 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-47266?
CVE-2026-47266 is a high vulnerability published on May 29, 2026. Formie is a Craft CMS plugin for creating forms. Prior to 2.2.21 and 3.1.26, unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission. This vulnerability is fixed in 2.2.21 and 3.1.26.
When was CVE-2026-47266 disclosed?
CVE-2026-47266 was first published in the National Vulnerability Database on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47266 actively exploited?
CVE-2026-47266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47266?
CVE-2026-47266 has a CVSS v4.0 base score of 8.7 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-47266?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47266, 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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