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7.3
CVE-2026-111874: OpenCATS Career Portal allows unlimited login attempts
CVE-2026-111874 · published today
Summary
The login page in OpenCATS version 0.10.0 does not properly limit how many times a user can try to sign in, letting attackers repeatedly guess passwords. This can lead to account takeover if combined with other attacks. Apply the provided patch or add rate‑limiting protection at your web server or reverse‑proxy to stop excessive login attempts.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| – | opencats | 0.10.0 |
Original advisory text
OpenCATS Career Portal CareersUI.php processLogin excessive authentication
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."
References
- https://github.com/opencats/OpenCATS/pull/906 Patch
- https://gist.github.com/asdfghjkl12345678910111/851e7548613e4ae1b8b246edb2ca7c28 Exploit
- https://github.com/opencats/OpenCATS/commit/1cf4fa3ee9054314b023be79d404078645c2... Patch
- https://github.com/opencats/OpenCATS/ URL
- https://github.com/opencats/OpenCATS/issues/905 Third Party Advisory
- https://vuldb.com/cve/CVE-2026-111874 Vendor Advisory
- https://vuldb.com/submit/1005051 Vendor Advisory
- https://vuldb.com/vuln/421586 Vendor Advisory
- https://vuldb.com/vuln/421586/cti Third Party Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-1118... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-111874 Vendor Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Severity
7.3
High
Type
CWE-307Improper Restriction of Excessive Authentication Attempts
CWE-799Improper Control of Interaction Frequency
Timeline
Published18 Oct 2026
Updated19 Oct 2026
First seen18 Oct 2026
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