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  4. CVE 2026 77035 joomla extension joomlaeventmanagernet cross user
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Back to active CVEs
Medium · CVSS 5.1CVE-2026-77035

Joomla Extension - joomlaeventmanager.net - Cross-user event and venue takeover through forged form fields in Joomla Event Manager < 5.0.1CVE-2026-77035

Answer in brief

CVE-2026-77035 records a Medium severity (CVSS 5.1) vulnerability in Joomla Extension - joomlaeventmanager.net - Cross-user event and venue takeover through forged form fields in Joomla Event Manager < 5.0.1. The current sources do not mark it as known exploited. The current feed maps joomlaeventmanager.net/JEM - Joomla Event Manager extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 27, 2026Updated Aug 28, 2026Source checked Oct 11, 2026First seen by HOL Aug 27, 2026Material review Aug 28, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps joomlaeventmanager.net/JEM - Joomla Event Manager extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
joomlaeventmanager.net/JEM - Joomla Event Manager extension for Joomlageneric1.0.0-5.0.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for joomlaeventmanager.net/JEM - Joomla Event Manager extension for Joomla.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 27, 2026

Sources and claim methodology

  • Source referencejoomlaeventmanager.net
Upstream source description

Joomla Extension - joomlaeventmanager.net - Cross-user event and venue takeover through forged form fields in Joomla Event Manager < 5.0.1 - A registered user with edit-own rights (the eventowner=1 setting or core.edit.own) can POST another user's record id together with their own id as created_by and take over that record.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • UnicomAI Wanwu before 0.6.3 IDOR via DELETE /v1/appspace/appAlso CWE-639
  • Wanwu before 0.6.3 IDOR AppKey Deletion via DELETE /v1/appspace/app/keyAlso CWE-639
  • UnicomAI Wanwu through 0.6.5 Authorization Bypass via /v1/appspace/app/key AppKey MintingAlso CWE-639
  • APIPark through 1.9.7-beta IDOR via application authorization endpointsAlso CWE-639
  • iFlytek Astron Agent through 1.1.2 Authorization Bypass via /workflow/v1/resume EndpointAlso CWE-639
  • JeecgBoot through 3.9.5 IDOR via /airag/api/getChatVariable Username ParameterAlso CWE-639

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-639
Source
CVE List V5
Source checked
Oct 11, 2026
References
1 linked source
Open source record