Vulnerability · Published Oct 18, 2026 · Assigned by VulDB
CVE-2026-111874OpenCATS Career Portal CareersUI.php processLogin excessive authentication
Low 3.7
In plain English
A low-severity security flaw in OpenCATS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).
Official description
A flaw has been found in OpenCATS 0.10.0. Affected is the function processLogin of the file modules/careers/CareersUI.php of the component Career Portal. This manipulation of the argument applyToJobSubAction causes improper restriction of excessive authentication attempts. Remote exploitation of the attack is possible. A high degree of complexity is needed for the attack. The exploitability is told to be difficult. The exploit has been published and may be used. Patch name: 1cf4fa3ee9054314b023be79d404078645c22ade. It is suggested to install a patch to address this issue. The project maintainer explains: "Candidates will now need to authenticate each time they access the Career Portal and successfully complete the CAPTCHA as part of that authentication flow. The authenticated candidate identity is now maintained server-side rather than relying on the previous persistent client-side cats…cw cookie mechanism. Application-level rate limiting is deliberately not in scope for this change. In my view, request throttling and brute-force protection of that kind are better applied at the network, reverse-proxy or web-server layer, where they can be configured appropriately for each deployment without OpenCATS having to implement and maintain its own rate-limiting framework. I'll update the online documentation to that effect."
Affected products (as reported)
Weakness: CWE-307, CWE-799 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
References
- VDB-421586 | OpenCATS Career Portal CareersUI.php processLogin excessive authentication vdb-entry, technical-description
- VDB-421586 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-111874 | CVE Analysis and Report third-party-advisory
- Submit #1005051 | opencats OpenCATS 0.10.0 (d5cf733f20d62b70dca1fcac23f64d6f2b021ff3) OpenCATS - Career Portal Candidate Login: Missing Rate Limiting third-party-advisory
- https://github.com/opencats/OpenCATS/issues/905 issue-tracking
- https://github.com/opencats/OpenCATS/pull/906 issue-tracking, patch
- https://gist.github.com/asdfghjkl12345678910111/851e7548613e4ae1b8b246edb2ca7c28 exploit
- https://github.com/opencats/OpenCATS/commit/1cf4fa3ee9054314b023be79d404078645c22ade patch
- https://github.com/opencats/OpenCATS/ product