CVE-2026-34989

CRITICALNVD 9.09.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.0 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 84% 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
Elevated
9.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.0Exploit: NoneExposed: 0

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

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 31.0.0.0, the application fails to properly sanitize user-controlled input when users update their profile name (e.g., full name / username). An attacker can inject a malicious JavaScript payload into their profile name, which is then stored server-side. This stored payload is later rendered unsafely in multiple application views without proper output encoding, leading to stored cross-site scripting (XSS). This vulnerability is fixed in 31.0.0.0.

CVSS v3
9.0
EG Score
9.0(medium)
EPSS
21.5%
KEV
Not listed

Published

April 6, 2026

Last Modified

April 27, 2026

Advisory Details (1)

Auto-updated Apr 28, 2026
Patch available. Sources: github.
github Patch Available

User Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS · Advisory · ci4-cms-erp/ci4ms · GitHub

https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
ci4-cms-erp/ci4ms0.21.0 ... 0.31.8.0 (56 versions)31.0.0.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 41× 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 101 total refreshes for this CVE.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:15 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
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  7. 2026-07-06 02:23 UTCEPSS rescore
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  12. 2026-06-30 23:22 UTCEPSS rescore
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  15. 2026-06-28 14:07 UTCEPSS rescore
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  17. 2026-06-28 04:56 UTCEPSS rescore
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  20. 2026-06-25 13:49 UTCEPSS rescore
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  23. 2026-06-23 21:33 UTCEPSS rescore
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  25. 2026-06-22 14:25 UTCEPSS rescore
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  1. 2026-06-22 14:25 UTCEPSS rescore
  2. 2026-06-21 14:56 UTCEPSS rescore
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  4. 2026-06-21 01:59 UTCEPSS rescore
  5. 2026-06-19 19:25 UTCEPSS rescore
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  11. 2026-06-15 17:49 UTCEPSS rescore
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  16. 2026-06-12 05:15 UTCEG score recompute
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  18. 2026-06-11 21:36 UTCEG score recompute
  19. 2026-06-11 14:00 UTCEPSS rescore
  20. 2026-06-10 22:18 UTCEPSS rescore
  21. 2026-06-10 21:00 UTCEG score recompute
  22. 2026-06-10 16:54 UTCEG score recompute
  23. 2026-06-10 13:22 UTCEPSS rescore
  24. 2026-06-10 13:04 UTCEG score recompute
  25. 2026-06-10 09:02 UTCEG score recompute
  26. 2026-06-10 05:12 UTCEG score recompute
  27. 2026-06-10 01:13 UTCEG score recompute
  28. 2026-06-09 17:55 UTCEG score recompute
  29. 2026-06-09 14:06 UTCEG score recompute
  30. 2026-06-08 14:17 UTCEPSS rescore
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  32. 2026-06-08 13:17 UTCEG score recompute
  33. 2026-06-08 09:28 UTCEG score recompute
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  35. 2026-06-08 01:49 UTCEG score recompute
  36. 2026-06-07 22:00 UTCEG score recompute
  37. 2026-06-07 18:10 UTCEG score recompute
  38. 2026-06-07 15:25 UTCEPSS rescore
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  40. 2026-06-07 15:25 UTCEPSS rescore
  41. 2026-06-07 14:19 UTCEG score recompute
  42. 2026-06-07 10:29 UTCEG score recompute
  43. 2026-06-06 13:47 UTCEPSS rescore
  44. 2026-06-06 13:47 UTCEPSS rescore
  45. 2026-06-05 22:47 UTCEPSS rescore
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  47. 2026-06-05 06:10 UTCEPSS rescore
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  49. 2026-06-04 13:12 UTCEPSS rescore
  50. 2026-06-04 13:12 UTCEPSS rescore
  51. 2026-06-02 20:13 UTCEPSS rescore
  52. 2026-06-01 13:52 UTCEPSS rescore
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  55. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-29 13:44 UTCEPSS rescore
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  65. 2026-05-27 13:40 UTCEPSS rescore
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  68. 2026-05-26 13:44 UTCEPSS rescore
  69. 2026-05-26 07:18 UTCEPSS rescore
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  71. 2026-05-23 00:08 UTCEG score recompute
  72. 2026-05-20 22:38 UTCEPSS rescore
  73. 2026-05-20 22:38 UTCEPSS rescore
  74. 2026-05-20 18:54 UTCEG score recompute
  75. 2026-05-20 11:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34989?
CVE-2026-34989 is a critical vulnerability published on April 6, 2026. CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 31.0.0.0, the application fails to properly sanitize user-controlled input when users update their profile name (e.g., full name / username). An…
When was CVE-2026-34989 disclosed?
CVE-2026-34989 was first published in the National Vulnerability Database on April 6, 2026, with the most recent update on April 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34989 actively exploited?
CVE-2026-34989 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-34989?
CVE-2026-34989 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-34989?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34989, 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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