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PatchSiren cyber security CVE debrief

CVE-2026-111652 3xxx CVE debrief

CVE-2026-111652 is a missing authorization vulnerability in Engineercms through version 2.0.5, specifically in the AttachController.Attachment component. This vulnerability allows unauthenticated attackers to download project image and video attachments by requesting known or derived /attachment/* paths for .jpg, .png, .bmp, or .mp4 files, which are served before casbin, owner, or admin checks.

Vendor
3xxx
Product
engineercms
CVSS
MEDIUM 6.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-16
Advisory published
2026-10-16
Advisory updated
2026-10-16

Who should care

Defenders responsible for Engineercms deployments, especially those hosting sensitive project attachments, should assess exposure and prioritize verification and potential remediation.

Why it matters

CVE-2026-111652 is a missing authorization vulnerability in Engineercms through version 2.0.5 that allows unauthenticated attackers to download project attachments. Defenders should prioritize verifying exposure, especially for deployments hosting sensitive project attachments, and assess restricting access to attachment files.

  • Verify exposure of Engineercms deployments to unauthorized access of project attachments
  • Assess feasibility of restricting access to attachment files to prevent unauthorized downloads
  • Monitor for potential unauthorized access to project attachments

Technical summary

The vulnerability is caused by a missing authorization check in the AttachController.Attachment component of Engineercms through version 2.0.5. This allows unauthenticated attackers to download project image and video attachments by requesting known or derived /attachment/* paths for .jpg, .png, .bmp, or .mp4 files. The vulnerability allows unauthenticated attackers to download project attachments, which can be a security risk for deployments hosting sensitive project attachments. Defenders should prioritize verifying exposure of Engineercms deployments, especially those hosting sensitive project attachments, and assess the feasibility of restricting access to attachment files.

Defensive priority

Defenders should prioritize verifying exposure of Engineercms deployments, especially those hosting sensitive project attachments, and assess the feasibility of restricting access to attachment files.

Recommended defensive actions

  • Verify Engineercms deployments for exposure, especially those hosting sensitive project attachments
  • Assess the feasibility of restricting access to attachment files
  • Monitor for potential unauthorized access to project attachments
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description, affected versions, and references to additional information. The vulnerability is caused by a missing authorization check in the AttachController.Attachment component of Engineercms through version 2.0.5. This allows unauthenticated attackers to download project image and video attachments by requesting known or derived /attachment/* paths for .jpg, .png, .bmp, or .mp4 files. Defenders should verify exposure of Engineercms deployments, and

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111652 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111652

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-111652 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111652

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Engineercms through 2.0.5 Missing Authorization via AttachController.Attachment

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111652.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@hieuPenguinnn/engineercms-attachment-image-mp4-missing-authz

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/3xxx/engineercms/blob/v2.0.5/controllers/attachment.go

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/3xxx/engineercms

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/engineercms-through-2.0.5-missing-authorization-via-attachcontroller-attachment

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.