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CVE-2026-78074 – Unauthenticated Arbitrary Extension Deletion – miniOrange Joomla Extensions (Free V

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Summary

CVE-2026-78074 is an improper access control vulnerability (CWE-284) affecting the free editions of the miniOrange OAuth Client extension and 22 other miniOrange Joomla extensions. A missing authentication check allows unauthenticated remote attackers to delete arbitrary installed extensions on an affected Joomla site. The flaw carries a base score of 8.8 (HIGH).

Technical details

  • Root cause: the affected extensions lack a proper authentication/authorization check on the extension deinstallation function.
  • Trigger condition: an unauthenticated actor sends a request that invokes the deinstallation routine; no credentials or prior session are required.
  • Attack vector: network-based, no user interaction, no privileges required, low attack complexity.
  • Impact: attackers can remove arbitrary installed Joomla extensions, including security or authentication components, without authenticating — enabling site disruption or weakening of other defenses. Only the free versions of the listed extensions are affected.

Affected software

  • miniOrange OAuth Client: 1.0.0–3.2.0
  • JoomShield: 1.0.0–1.0.2
  • Okta User Sync: 1.0.0–1.1.0
  • Keycloak User Sync: 1.0.0–1.1.0
  • Restrict Files/Folders/Media Access: 1.0.0–3.7
  • LDAP Integration: 1.0.0–6.4.7
  • Keycloak OAuth SSO: 1.0.0–1.2.2
  • SAML SSO Login with Google Apps: 1.0.0–6.4
  • SAML SP Single Sign On – ADFS: 1.0.0–6.4
  • Web3 – Crypto Wallet Login: 1.0.0–3.5.1
  • Azure AD OAuth SSO: 1.0.0–1.2.2
  • Azure User Provisioning: 1.0.0–1.1.0
  • JoomAI: 1.0.0–1.0.5
  • Educational SSO: 1.0.0–1.2.2
  • Two Factor Authentication: 1.0.0–5.0.9
  • OTP Verification: 1.0.0–6.6
  • SAML 2.0 IDP: 1.0.0–7.7
  • Staff/Employee Directory: 1.0.0–2.0.4
  • SAML SSO: 1.0.0–11.0.2
  • OAuth Server: 1.0.0–5.1.5
  • SCIM User Provisioning: 1.0.0–4.0.5
  • Custom API: 1.0.0–4.2
  • Import Export Users: 1.0.0–4.6

Severity

Base score: 8.8 (HIGH). Published vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N (network-based, low attack complexity, no privileges or user interaction required, high integrity and availability impact).

Mitigation and recommended actions

  • Immediate: upgrade each affected extension to a version released after the vulnerable range listed above (e.g., a release newer than 3.2.0 for the miniOrange OAuth Client), obtained directly from miniOrange’s official extension pages.
  • If no patch is yet available for a given extension: temporarily disable or uninstall the affected extension via Joomla’s Extensions → Manage console until a fixed release is confirmed, and monitor the site for unexpected extension removals in the interim.
  • Restrict or monitor access to the Joomla administrator and extension-management endpoints as an additional layer of defense while patching is completed.

How IONIX identifies potentially affected assets

IONIX matches the following signal against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw response body: ?morequest=oauthredirect (also matched as &morequest=oauthredirect)

References

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Map your entire attack surface (continously)

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4

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IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

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6

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Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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