CVE-2026-40326

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 95% 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: epss, nvd
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

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

Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in csettings.cfc does not properly validate anti-CSRF tokens for site bundle creation requests. An attacker can craft a malicious webpage or link that, when visited by a logged-in administrator, triggers the silent creation of a comprehensive site bundle. This bundle is saved to a predictable, publicly accessible web directory. An unauthenticated attacker can then retrieve the bundle and obtain site content, user account data, password hashes, form submissions, email lists, plugins, and configuration data. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, remove unexpected bundle files from public directories, restrict access to the affected endpoint, and limit exposure of administrative sessions.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
—
EPSS
5.2%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 6, 2026

Advisory Details (1)

Auto-updated May 6, 2026
Patch available. Sources: github.
github Patch Available

CSRF vulnerability in site bundle creation · Advisory · MasaCMS/MasaCMS · GitHub

https://github.com/MasaCMS/MasaCMS/security/advisories/GHSA-622v-h7vf-w4gm

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 34× 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. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
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  7. 2026-07-15 16:57 UTCEPSS rescore
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  9. 2026-07-15 14:19 UTCOSV refresh
  10. 2026-07-15 02:00 UTCEPSS rescore
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  1. 2026-06-30 23:22 UTCEPSS rescore
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  5. 2026-06-27 03:08 UTCEPSS rescore
  6. 2026-06-25 13:49 UTCEPSS rescore
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  8. 2026-06-24 14:05 UTCEPSS rescore
  9. 2026-06-23 21:33 UTCEPSS rescore
  10. 2026-06-22 14:25 UTCEPSS rescore
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  12. 2026-06-21 14:56 UTCEPSS rescore
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  14. 2026-06-21 01:59 UTCEPSS rescore
  15. 2026-06-19 19:25 UTCEPSS rescore
  16. 2026-06-18 17:52 UTCEPSS rescore
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  18. 2026-06-17 17:53 UTCEPSS rescore
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  20. 2026-06-15 17:49 UTCEPSS rescore
  21. 2026-06-13 23:00 UTCEPSS rescore
  22. 2026-06-12 23:12 UTCEPSS rescore
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  24. 2026-06-11 14:00 UTCEPSS rescore
  25. 2026-06-10 22:18 UTCEPSS rescore
  26. 2026-06-10 13:22 UTCEPSS rescore
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  28. 2026-06-08 14:17 UTCEPSS rescore
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  30. 2026-06-07 15:25 UTCEPSS rescore
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  32. 2026-06-06 13:47 UTCEPSS rescore
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  34. 2026-06-05 22:47 UTCEPSS rescore
  35. 2026-06-05 06:10 UTCEPSS rescore
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  37. 2026-06-04 13:12 UTCEPSS rescore
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  39. 2026-06-02 20:13 UTCEPSS rescore
  40. 2026-06-01 13:52 UTCEPSS rescore
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  43. 2026-05-31 22:30 UTCEPSS rescore
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  45. 2026-05-31 00:16 UTCEPSS rescore
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  48. 2026-05-29 13:44 UTCEPSS rescore
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  50. 2026-05-28 13:44 UTCEPSS rescore
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  53. 2026-05-27 13:40 UTCEPSS rescore
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  59. 2026-05-20 22:38 UTCEPSS rescore
  60. 2026-05-20 22:38 UTCEPSS rescore
  61. 2026-05-20 14:01 UTCEG score recompute
  62. 2026-05-20 11:22 UTCEPSS rescore
  63. 2026-05-20 11:22 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-40326?
CVE-2026-40326 is a high vulnerability published on May 6, 2026. Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the createBundle method in csettings.cfc does not properly validate anti-CSRF tokens for site bundle creation requests. An attacker can craft a malicious webpage or link that, when visited by a logged-in…
When was CVE-2026-40326 disclosed?
CVE-2026-40326 was first published in the National Vulnerability Database on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40326 actively exploited?
CVE-2026-40326 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40326?
CVE-2026-40326 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-40326?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40326, 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.

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