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Path traversal in diem-project diem dmCodeEditor module

Priority MEDIUM 56CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

diem-project diem up to and including 5.1.3 is affected. Manipulating input to the dmOs::join function in the dmCodeEditor actions file can lead to path traversal (CWE-22). A remote attacker with high privileges can trigger it, and a public exploit has been published. The project was informed early through an issue report but has not responded.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

A flaw has been found in diem-project diem up to 5.1.3. The impacted element is the function dmOs::join of the file dmFrontPlugin/modules/dmCodeEditor/actions/actions.class.php of the component dmCodeEditor. Executing a manipulation can lead to path traversal. The attack can be launched remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0033 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
diem-projectdiem5.1.0; 5.1.1; 5.1.2; 5.1.3—No fix listedCNA
  • diem Vendordiem-project Affected 5.1.0; 5.1.1; 5.1.2; 5.1.3 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:diem-project:diem:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:diem-project:diem:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

The sources list no fixed version for diem.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-112138
  2. 2026-10-19 Alias added: GHSA-46mr-p5vj-rv3q
  3. 2026-10-20 CISA SSVC decision points changed
  4. 2026-10-20 Priority changed: LOW → MEDIUM

References

  • TI-2026-58972 diem-project diem dmWidget BasedmWidgetActions.class.php authorization CVSS 4.0MEDIUM 6.9
  • TI-2026-76225 Open redirect in diem-project diem Sign-In via Referer argument CVSS 4.0MEDIUM 5.3
  • TI-2026-76226 Weak random number generator in diem-project diem dmString.php CVSS 4.0MEDIUM 6.3
  • TI-2026-76222 Improper certificate validation in diem Google Analytics Client CVSS 4.0MEDIUM 6.3
  • TI-2026-76213 Use of default password in diem-project diem CVSS 4.0MEDIUM 5.3
  • TI-2026-58971 diem-project diem dmConsole actions.class.php executeCommand cross-site request forgery CVSS 4.0MEDIUM 5.3
See all 12 →

Sources