VulnSocial

CVE-2026-53909Disclosure(mycomplianceoffice / mycomplianceoffice)

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized, low-privileged attacker can upload files with arbitrary types to the server. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.

mycomplianceoffice CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-434

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mycomplianceoffice

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
mycomplianceoffice
Products
mycomplianceoffice

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-07-01: 2Technical Details · 2026-07-01: 207-01
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-53909 MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized,… https://www.cve.org/CVERecord?id=CVE-2026-53909

    Post summary

    The post announces CVE‑2026‑53909, noting that MCO’s file upload validation depends solely on client‑side checks, enabling potential bypass; it contains no PoC, exploit tool, active exploitation claim, or patch information.

    00010758
    57.7K followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-53909 MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized,… https://www.cve.org/CVERecord?id=CVE-2026-53909 ----- Traducción: CVE-2026-53909 MCO… http://infoflow.cloud`

    Post summary

    The post discloses CVE‑2026‑53909, noting a client‑side only file‑type validation flaw that permits bypassing, but offers no PoC, exploit code, or evidence of active attacks.

    0000023
    90 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmycomplianceofficemycomplianceoffice25.3.3.1--

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