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VulnerabilityPublished

CVE-2026-34571: ci4-cms-erp ci4ms · Cross-site Scripting

Affects ci4-cms-erp ci4msSource CVE Database V5

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Not known to be exploited · CVSS 10.0 Critical : upgrade to 0.31.0.0 as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.

Contested

Critical score, yet low EPSS after six months
EPSS
0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.31.0.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade ci4ms and ci4-cms-erp/ci4ms to 0.31.0.0.

Affected software

ProductAffectedFixed in
ci4-cms-erpci4msAffected
  • <0.31.0.0
Fixed in
  • 0.31.0.0
GitHubci4-cms-erp/ci4mspkg:github/ci4-cms-erp/ci4msOther threatsAffected
  • <0.31.0.0
Fixed in
  • 0.31.0.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

An official fix is available in ci4ms version 0.31.0.0. Users should upgrade to this version or later to remediate the vulnerability. No additional mitigation steps are indicated beyond applying the patch.

Description

A critical Stored Cross-Site Scripting (XSS) vulnerability exists in ci4-cms-erp ci4ms versions prior to 0.31.0.0. The vulnerability occurs in the backend user management functionality where user input is not properly sanitized before being rendered. This allows attackers to inject persistent JavaScript code that executes automatically when backend users access the affected page. Exploitation can lead to session hijacking, privilege escalation, and full administrative account compromise. The issue has been patched in version 0.31.0.

References

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