CVE-2026-34560

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 69% 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
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application renders user-controlled input unsafely within the logs interface. If any stored XSS payload exists within logged data, it is rendered without proper output encoding. This issue becomes a Blind XSS scenario because the attacker does not see immediate execution. Instead, the payload is stored within application logs and only executes later when an administrator views the logs page. This issue has been patched in version 0.31.0.0.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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
Severity91% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

Published

April 1, 2026

Last Modified

April 13, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
Patch available. Sources: github_release, github.
githubMentions a patch (unverified)

Logs 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-r4v5-rwr2-q7r4
github_release Patch Available

v0.31.0.0 - Major Security & Framework Update (CI 4.7.1 & Shield Integration)

Patch available: ci4-cms-erp/ci4ms 0.31.0.0 (pre-release)

https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
ci4-cms-erp/ci4ms0.21.0 ... 0.28.6.0 (47 versions)
  • every version up to 0.31.0.0: fixed in 0.31.0.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 25× 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 181 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:47 UTCEPSS rescore
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  14. 2026-09-21 14:19 UTCOSV refresh
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  1. 2026-09-10 09:34 UTCEPSS rescore
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  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-02 11:44 UTCOSV refresh
  8. 2026-09-01 13:53 UTCEPSS rescore
  9. 2026-09-01 04:39 UTCEPSS rescore
  10. 2026-08-30 19:17 UTCEPSS rescore
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  20. 2026-08-19 17:03 UTCEPSS rescore
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  24. 2026-08-16 09:28 UTCEG score recompute
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  27. 2026-08-14 05:53 UTCEG score recompute
  28. 2026-08-13 22:00 UTCEPSS rescore
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  31. 2026-08-11 20:32 UTCEG score recompute
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  34. 2026-08-09 17:03 UTCEG score recompute
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  37. 2026-08-08 16:37 UTCEPSS rescore
  38. 2026-08-07 19:37 UTCEG score recompute
  39. 2026-08-06 17:59 UTCEG score recompute
  40. 2026-08-06 13:46 UTCEPSS rescore
  41. 2026-08-06 00:27 UTCEG score recompute
  42. 2026-08-05 19:17 UTCEPSS rescore
  43. 2026-08-04 15:10 UTCEPSS rescore
  44. 2026-08-04 10:38 UTCEPSS rescore
  45. 2026-08-03 22:48 UTCEG score recompute
  46. 2026-08-03 10:36 UTCEPSS rescore
  47. 2026-08-02 14:45 UTCEG score recompute
  48. 2026-08-02 02:27 UTCEPSS rescore
  49. 2026-08-01 04:16 UTCEPSS rescore
  50. 2026-07-30 16:28 UTCEPSS rescore
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  61. 2026-07-23 03:09 UTCEG score recompute
  62. 2026-07-22 14:08 UTCEPSS rescore
  63. 2026-07-21 15:24 UTCEPSS rescore
  64. 2026-07-20 17:08 UTCEPSS rescore
  65. 2026-07-19 14:31 UTCEPSS rescore
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  67. 2026-07-18 10:04 UTCEPSS rescore
  68. 2026-07-17 19:59 UTCOSV refresh
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-15 16:57 UTCEPSS rescore
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  73. 2026-07-13 22:30 UTCEPSS rescore
  74. 2026-07-13 06:13 UTCEPSS rescore
  75. 2026-07-13 06:13 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-34560?
CVE-2026-34560 is a critical vulnerability published on April 1, 2026. CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application renders user-controlled input unsafely within the logs interface. If any stored XSS payload exists within logged…
When was CVE-2026-34560 disclosed?
CVE-2026-34560 was first published on April 1, 2026, with the most recent update on April 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34560 actively exploited?
CVE-2026-34560 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34560?
CVE-2026-34560 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-34560?
A fix for CVE-2026-34560 is available: update to the fixed version the vendor names in its advisory.

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