Description

Unauthenticated Broken Access Control in Timetics <= 1.0.61 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-09-03T17:17:25.030Z",
  "pubdate": "2026-09-03T17:17:25.030Z",
  "executiveSummary": "The vulnerability identified in Timetics versions 1.0.61 and earlier involves a critical flaw in access control mechanisms.\nThis vulnerability is classified as an Unauthenticated Broken Access Control issue, allowing unauthorized users to interact with restricted functions without prior authentication.\nThe impact of this flaw is significant, as it enables attackers to perform unauthorized actions within the Timetics environment, potentially leading to unauthorized data access, modification, or administrative configuration changes.\nThe vulnerability affects all installations of Timetics at or below version 1.0.61.\nSuccessful exploitation does not require valid credentials or a registered user account, significantly lowering the barrier to entry for malicious actors.\nThe risk implication is high, as the lack of authentication enforcement bypasses standard security boundaries, granting attackers implicit access to functionalities that should be protected.\nOrganizations using the affected software are at risk of complete compromise of the plugin's functional scope if left unaddressed.",
  "technicalDetails": "The root cause of the vulnerability lies in the improper implementation of access control checks within the Timetics plugin framework. Specifically, the affected components fail to validate the session state or authorization tokens of the request originator before executing sensitive business logic.\nIn the affected versions (<= 1.0.61), the code responsible for handling specific API endpoints or administrative actions omits the necessary checks against current user permissions or authentication status. This effectively allows any unauthenticated request directed to these endpoints to be processed as if it were an authorized interaction.\nThe attack flow commences when a remote, unauthenticated attacker identifies the vulnerable endpoints within the Timetics installation. By crafting an HTTP request targeted at these unprotected functions, the attacker can manipulate the application's state. Since there is no gatekeeping mechanism, the plugin processes the request and executes the underlying functions.\nThe vulnerable component operates at the request-handling layer, where input sanitization and access validation should occur. Because these checks are absent, the application does not differentiate between a legitimate authenticated request and a malicious request originating from an anonymous source.\nThe exploitation method involves sending standard HTTP requests (GET or POST) to the identified vulnerable endpoints. These requests do not require valid session cookies or authorization headers. The payload behavior depends on the specific function being accessed, but can include unauthorized modification of scheduling parameters, access to restricted user or calendar data, or triggering plugin-specific administrative workflows.\nFrom a post-exploitation perspective, an attacker can gain full operational control over the plugin’s features. This could lead to the unauthorized disclosure of sensitive scheduling information, corruption of stored data, or potentially escalation of impact if the plugin interfaces with external calendar services or underlying database structures.\nGiven that the vulnerability exists at the network edge of the plugin interface, the attack surface is globally exposed to any user who can reach the web server hosting the Timetics plugin. The lack of requirement for administrative or user privileges makes this a high-severity entry point for automated exploitation scripts or manual reconnaissance."
}