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Vulnerabilities

Vulnerability · CVE-2026-21626

Access control settings for forum post custom fields are not applied to the JSON output type, leading to an ACL violation vector an information disclosure

Published Feb 6, 2026 · catalog updated Feb 20, 2026 · EasyDiscuss extension for Joomla

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-21626. EPSS is 0.41%. Act only if a listed version of EasyDiscuss extension for Joomla is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.41%
Remediation
Vendor / distro source
Affected products
vendor stackideas.com EasyDiscuss extension for Joomla 1.0.0-5.0.15

Access control settings for forum post custom fields are not applied to the JSON output type, leading to an ACL violation vector an information disclosure

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor stackideas.com EasyDiscuss extension for Joomla 1.0.0-5.0.151.0.0-5.0.15

How to fix CVE-2026-21626

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-21626. EPSS is 0.41%. Act only if a listed version of EasyDiscuss extension for Joomla is installed.

Which versions are affected?

Compare what you have installed with stackideas.com EasyDiscuss extension for Joomla 1.0.0-5.0.15 1.0.0-5.0.15. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.41%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Joomla security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 6, 2026 · EUVD

    Detected

    Access control settings for forum post custom fields are not applied to the JSON output type, leading to an ACL violation vector an information disclosure

  2. Feb 20, 2026 · EUVD

    Updated

    Access control settings for forum post custom fields are not applied to the JSON output type, leading to an ACL violation vector an information disclosure

Sources

  • CVE.orgVulnerability recordCVE-2026-21626

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-21626

    30-day exploitation probability 0.41%

    first.org
  • EUVDVulnerability recordEUVD-2026-5682

    Access control settings for forum post custom fields are not applied to the JSON output type, leading to an ACL violation vector an information disclosure

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • FIRST EPSSNov 3, 2026
  • EUVDNov 3, 2026