CVE-2026-50772: Squirro Cognitive Search RCE Vulnerability

CVE-2026-50772 Overview

CVE-2026-50772 is a code injection vulnerability affecting Squirro Cognitive Search versions prior to 3.14.2. A remote, unauthenticated attacker can execute arbitrary code by sending a crafted payload to the password reset function. The flaw is classified under CWE-94: Improper Control of Generation of Code and carries a CVSS 3.1 base score of 9.8. Squirro Cognitive Search is an enterprise search and insight platform used to unify structured and unstructured data across corporate sources. Successful exploitation compromises confidentiality, integrity, and availability of the target instance.

Critical Impact
An unauthenticated network attacker can achieve remote code execution against exposed Squirro Cognitive Search instances running versions below 3.14.2.

Affected Products

Squirro Cognitive Search versions prior to 3.14.2

Discovery Timeline

2026-08-17 - CVE-2026-50772 published to NVD
2026-08-18 - Last updated in NVD database

Technical Details for CVE-2026-50772

Vulnerability Analysis

The vulnerability resides in the password reset function of Squirro Cognitive Search. The endpoint accepts attacker-controlled input that is subsequently evaluated as code by the application. Because the endpoint is reachable pre-authentication, an attacker only requires network access to trigger execution. Code executes in the context of the Squirro application process, granting access to indexed corporate data, connected data sources, and stored credentials for backend integrations.

The issue is tracked under CWE-94, which covers improper neutralization of directives that alter the intended control flow of the interpreter. The current EPSS probability is 0.515% at the 41.66 percentile as of 2026-08-23.

Root Cause

The password reset handler fails to properly sanitize or validate user-supplied fields before passing them to a component that interprets input as executable code or expressions. Without strict input validation and safe parsing, an attacker can embed payloads that break out of the expected data context and execute application-level logic.

Attack Vector

Exploitation is performed over the network with low complexity, no privileges, and no user interaction. An attacker sends a crafted HTTP request to the password reset endpoint containing a malicious payload. The application processes the payload, and the injected code executes on the server. See the GitHub CVE-2026-50772 Repository for reference material.

No verified proof-of-concept exploit code is available from a trusted source; refer to the vendor documentation for endpoint context in the Squirro Cognitive Search Documentation.

Detection Methods for CVE-2026-50772

Indicators of Compromise

Unexpected HTTP POST requests to the password reset endpoint containing scripting syntax, template expressions, or serialized objects.
Child processes spawned by the Squirro application user, especially shells, curl, wget, or interpreters such as python and sh.
Outbound network connections from the Squirro host to unfamiliar external IP addresses or hosting providers.
New or modified files in Squirro configuration and data directories that do not correspond to a known deployment change.

Detection Strategies

Inspect web server and application logs for password reset requests with abnormally large bodies, unusual character sets, or non-standard JSON structures.
Correlate password reset activity with subsequent process creation and network egress events on the same host.
Alert on any interactive shell or scripting interpreter launched by the Squirro service account.

Monitoring Recommendations

Enable verbose logging on the Squirro application and forward events to a centralized SIEM for correlation.
Baseline normal password reset traffic volumes and alert on statistical deviations.
Monitor for authentication anomalies following password reset requests, including logins from new geographies or user agents.

How to Mitigate CVE-2026-50772

Immediate Actions Required

Upgrade Squirro Cognitive Search to version 3.14.2 or later without delay.
Restrict network access to the Squirro management interface using firewall rules or a reverse proxy allowlist.
Rotate credentials, API keys, and service account secrets stored in or accessible from the Squirro instance.
Review application and web server logs for suspicious password reset activity since the deployment date.

Patch Information

The vendor has addressed CVE-2026-50772 in Squirro Cognitive Search version 3.14.2. Consult the Squirro Cognitive Search Documentation for upgrade procedures and release notes.

Workarounds

Place the Squirro Cognitive Search application behind a web application firewall configured to block payloads targeting the password reset endpoint.
Limit access to the password reset endpoint to trusted internal networks or VPN clients until the patch is applied.
Disable the password reset function at the reverse proxy layer if the feature is not required by the deployment.

bash

# Example nginx rule to restrict password reset endpoint to an internal CIDR
location /password-reset {
    allow 10.0.0.0/8;
    deny all;
    proxy_pass http://squirro_backend;
}