CVE-2026-34072

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 63% 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history for cronjobs. Prior to version 2.2.0, an authentication bypass in middleware allows unauthenticated requests with an invalid session cookie to be treated as authenticated when the middleware’s session-validation fetch fails. This can result in unauthorized access to protected pages and unauthorized execution of privileged Next.js Server Actions. This issue has been patched in version 2.2.0.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

April 1, 2026

Last Modified

June 2, 2026

Advisory Details (2)

Auto-updated Sep 9, 2026
Patch available. Sources: github_release, github.
github Patch Available

Middleware authentication bypass enabling unauthorized page access and server-action execution · Advisory · fccview/cronmaster · GitHub

https://github.com/fccview/cronmaster/security/advisories/GHSA-9whh-mffv-xvh6
github_release Patch Available

[Stable] Release - 2.2.0

Patch available: fccview/cronmaster 2.2.0

https://github.com/fccview/cronmaster/releases/tag/2.2.0

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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 158 total refreshes for this CVE.

  1. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-12 15:01 UTCEPSS rescore
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  12. 2026-09-02 11:44 UTCOSV refresh
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  1. 2026-08-19 17:03 UTCEPSS rescore
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  5. 2026-08-16 09:29 UTCEG score recompute
  6. 2026-08-16 02:14 UTCEPSS rescore
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  8. 2026-08-14 05:55 UTCEG score recompute
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  23. 2026-08-05 19:17 UTCEPSS rescore
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  26. 2026-08-03 22:49 UTCEG score recompute
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  40. 2026-07-23 14:18 UTCEPSS rescore
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  42. 2026-07-23 03:09 UTCEG score recompute
  43. 2026-07-22 14:08 UTCEPSS rescore
  44. 2026-07-21 15:24 UTCEPSS rescore
  45. 2026-07-20 17:08 UTCEPSS rescore
  46. 2026-07-19 14:31 UTCEPSS rescore
  47. 2026-07-19 02:29 UTCEPSS rescore
  48. 2026-07-18 10:04 UTCEPSS rescore
  49. 2026-07-17 18:29 UTCOSV refresh
  50. 2026-07-16 17:03 UTCEPSS rescore
  51. 2026-07-15 16:57 UTCEPSS rescore
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  72. 2026-06-28 14:07 UTCEPSS rescore
  73. 2026-06-28 14:07 UTCEPSS rescore
  74. 2026-06-28 04:56 UTCEPSS rescore
  75. 2026-06-28 04:56 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-34072?
CVE-2026-34072 is a critical vulnerability published on April 1, 2026. Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history for cronjobs. Prior to version 2.2.0, an authentication bypass in middleware allows unauthenticated requests with an invalid session cookie to be treated as authenticated when the…
When was CVE-2026-34072 disclosed?
CVE-2026-34072 was first published in the National Vulnerability Database on April 1, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34072 actively exploited?
CVE-2026-34072 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.6% of all scored CVEs.
What is the CVSS score of CVE-2026-34072?
CVE-2026-34072 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-34072?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34072, 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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