Security Vulnerabilities
Nu Html Checker (validator.nu) contains a restriction bypass that allows remote attackers to make the server perform arbitrary HTTP/HTTPS requests to internal resources, including localhost services. While the validator implements hostname-based protections to block direct access to localhost and 127.0.0.1, these controls can be bypassed using DNS rebinding techniques or domains that resolve to loopback addresses.This issue affects The Nu Html Checker (vnu): latest (commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd).
CVSS Score
5.3
EPSS Score
0.001
Published
2026-01-16
In ConnectWise PSA versions older than 2026.1, Time Entry notes stored in the Time Entry Audit Trail may be rendered without applying output encoding to certain content. Under specific conditions, this may allow stored script code to execute in the context of a user’s browser when the affected content is displayed.
CVSS Score
8.7
EPSS Score
0.0
Published
2026-01-16
In ConnectWise PSA versions older than 2026.1, certain session cookies were not set with the HttpOnly attribute. In some scenarios, this could allow client-side scripts access to session cookie values.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-01-16
Livewire Filemanager, commonly used in Laravel applications, contains LivewireFilemanagerComponent.php, which does not perform file type and MIME validation, allowing for RCE through upload of a malicious php file that can then be executed via the /storage/ URL if a commonly performed setup process within Laravel applications has been completed.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-01-16
The Librarian contains a information leakage vulnerability through the `web_fetch` tool, which can be used to retrieve arbitrary external content provided by an attacker, which can be used to proxy requests through The Librarian infrastructure. The vendor has fixed the vulnerability in all versions of TheLibrarian.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-16
The Librarian contains an internal port scanning vulnerability, facilitated by the `web_fetch` tool, which can be used with SSRF-style behavior to perform GET requests to internal IP addresses and services, enabling scanning of the Hertzner cloud environment that TheLibrarian uses. The vendor has fixed the vulnerability in all affected versions.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-16
The Librarian `supervisord` status page can be retrieved by the `web_fetch` tool, which can be used to retrieve running processes within TheLibrarian backend. The vendor has fixed the vulnerability in all affected versions.
CVSS Score
7.3
EPSS Score
0.0
Published
2026-01-16
TheLibrarians web_fetch tool can be used to retrieve the Adminer interface content, which can then be used to log into the internal TheLibrarian backend system. The vendor has fixed the vulnerability in all affected versions.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-16
Mattermost versions 10.11.x <= 10.11.8, 11.1.x <= 11.1.1, 11.0.x <= 11.0.6 fail to prevent infinite re-renders on API errors which allows authenticated users to cause application-level DoS via triggering unbounded component re-render loops.
CVSS Score
6.8
EPSS Score
0.0
Published
2026-01-16
In Apache Airflow versions before 3.1.6, when rendered template fields in a Dag exceed [core] max_templated_field_length, sensitive values could be exposed in cleartext in the Rendered Templates UI. This occurred because serialization of those fields used a secrets masker instance that did not include user-registered mask_secret() patterns, so secrets were not reliably masked before truncation and display.
Users are recommended to upgrade to 3.1.6 or later, which fixes this issue
CVSS Score
7.5
EPSS Score
0.001
Published
2026-01-16