CVE-2026-86794：Community Events 外掛 1.4.9–1.5.9 允許未授權使用者注入儲存型 XSS

The Community Events WordPress plugin before 1.6.0 does not have authorisation or nonce checks when processing public event submissions, and does not escape several of the submitted values before outputting them in the administration dashboard and on the public calendar, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of an administrator reviewing the submission.

Impact

Affected Products

The following products are affected by CVE-2026-86794 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Update Community Events plugin to version 1.6.0 or later to address authorization and script injection flaws.

• Update the Community Events plugin to 1.6.0 or later.
• Apply vendor patches or updates promptly.
• Review plugin settings for security configurations.

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-86794.

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-86794 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-86794 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-86794 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-86794 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

• CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

  十月. 29, 2026

  Action	Type	Old Value	New Value
  Added	CVSS V3.1		AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  Added	CWE		CWE-79
  Added	SSVC		{'id': 'CVE-2026-86794', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-29T10:47:52.999713Z'}

• New CVE Received by [email protected]

  十月. 29, 2026

  Action	Type	Old Value	New Value
  Added	Description		The Community Events WordPress plugin before 1.6.0 does not have authorisation or nonce checks when processing public event submissions, and does not escape several of the submitted values before outputting them in the administration dashboard and on the public calendar, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of an administrator reviewing the submission.
  Added	Affected		New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/86xxx/CVE-2026-86794.json">CVE-2026-86794</a>
  Added	Reference		https://wpscan.com/vulnerability/058aa2e1-0b9c-431f-b0e4-4e93e4977a63/

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.