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TI-2025-03520 Aliases CVE-2025-3977GHSA-77gx-3fxf-6gxj

iteachyou Dreamer CMS Attachment download improper authorization

Priority MEDIUM 57CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.

Summary

A vulnerability was found in iteachyou Dreamer CMS up to 4.1.3. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/attachment/download of the component Attachment Handler. The manipulation of the argument ID leads to improper authorization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00373 31st 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
DreamerDreamer CMS4.1.0; 4.1.1; 4.1.2; 4.1.3—No fix listedCNA
  • Dreamer CMS VendorDreamer Affected 4.1.0; 4.1.1; 4.1.2; 4.1.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:iteachyou:dreamer_cms:*:*:*:*:*:*:*:*up to 4.1.3VulnerableDreamer
  • cpe:2.3:a:iteachyou:dreamer_cms:*:*:*:*:*:*:*:* Versions up to 4.1.3 Vulnerable ·Dreamer

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-3977
  2. 2026-10-03 Alias added: GHSA-77gx-3fxf-6gxj

References

Exploit 1

  • TI-2023-25324 Dreamer CMS before version 4.0.1 is vulnerable to Directory Traversal. CVSS 3.1CRITICAL 9.1
  • TI-2023-26681 Dreamer CMS v4.1.3 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component /admin/archives/edit. CVSS 3.1HIGH 8.8
  • TI-2023-25325 In Dreamer CMS before 4.0.1, the backend attachment management office has an Arbitrary File Download vulnerability. CVSS 3.1HIGH 7.5
  • TI-2024-03103 Dreamer CMS ThemesController.java ZipUtils.unZipFiles path traversal CVSS 3.1HIGH 8.8
  • TI-2024-16954 An access control issue in Dreamer CMS v4.0.1 allows attackers to download backup files and leak sensitive information. CVSS 3.1MEDIUM 6.5
  • TI-2024-02189 Dreamer CMS toEdit cross-site request forgery CVSS 3.1MEDIUM 6.5
See all 38 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences