CVE-2026-40326

HIGHNVD 7.17.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.2% (4th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-28161 (ENISA EUVD)Source: ENISA EUVD

7.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

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
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 6, 2026

Last Modified

May 6, 2026

Advisory Details (1)

Auto-updated May 6, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

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 9× in last 7d / 36× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 198 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 99 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 4th percentile
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  6. 2026-10-25 14:31 UTCEG score recompute
  7. 2026-10-25 01:48 UTCEG score recompute
  8. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
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  14. 2026-10-18 03:43 UTCEG score recompute
  15. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  17. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  22. 2026-10-12 16:09 UTCEG score recompute
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  25. 2026-10-11 14:31 UTCEG score recompute
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  1. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  10. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-09-30 09:11 UTCOSV refresh
  13. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  24. 2026-09-11 15:40 UTCOSV refresh
  25. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  26. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  41. 2026-08-23 19:43 UTCEG score recompute
  42. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
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  73. 2026-08-02 04:43 UTCEG score recompute
  74. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.2% · 5th percentile

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Frequently asked(5)

What is CVE-2026-40326?
CVE-2026-40326 is a high-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-40326 published?
The CVE record for CVE-2026-40326 was published on May 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 6, 2026; the record at its source may have been updated since.
Is CVE-2026-40326 actively exploited?
CVE-2026-40326 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
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?
The CVE record for CVE-2026-40326 names the fix: "This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3."

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