CVE-2026-34560

CRITICAL
INFO Priority: 0.03 BB Relevance: 58/100
Published: 2026-04-01 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Required
S: Changed
C: High
I: High
A: High

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
ci4-cms-erp ci4ms < 0.31.0.0

Bug Bounty Relevance

58 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

9.0 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS — Exploitation Probability

0.39%
Raw Score 0.003870
Percentile 32.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00387
2026-10-28
0.00380

Intelligence Sources

nvd ref →