← Vulnerability feed

Vulnerability record · CVE-2026-45553 · published 2 June 2026

CVE-2026-45553: Information exposure vulnerability

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, ui.restructured_text() renders reStructuredText server-side with Docutils without disabling file insertion directives. When a NiceGUI application passes attacker-controlled content to ui.restructured_text(), an attacker can use standard Docutils directives (include, csv-table with :file:, raw with :file:) to read local files readable by the NiceGUI server process. Applications that only pass trusted static strings to ui.restructured_text() are not affected. This issue has been patched in version 3.12.0.

7.5 CVSS 3.1 High EPSS 0.43% · top 65.0% CWE-200 · Information exposure Deferred
7.5CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
22 Jul 2026Last modified by NVD

Description

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, ui.restructured_text() renders reStructuredText server-side with Docutils without disabling file insertion directives. When a NiceGUI application passes attacker-controlled content to ui.restructured_text(), an attacker can use standard Docutils directives (include, csv-table with :file:, raw with :file:) to read local files readable by the NiceGUI server process. Applications that only pass trusted static strings to ui.restructured_text() are not affected. This issue has been patched in version 3.12.0.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

LinkTags
https://github.com/zauberzeug/nicegui/releases/tag/v3.12.0
https://github.com/zauberzeug/nicegui/security/advisories/GHSA-jfrm-rx66-g536

Track CVE-2026-45553 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.9CVE-2025-68686FortiOS symbolic link patch bypass exposes sensitive informationFortiOS contains an information exposure flaw (CWE-200) that lets a remote unauthenticated attacker bypass the patch for the symbolic link persistenc…KEVEPSS 30%analysed7.5CVE-2026-20133Cisco Catalyst SD-WAN Manager insufficient file system restrictions expose dataCisco Catalyst SD-WAN Software has insufficient file system restrictions that let an attacker read sensitive files on the underlying operating system…KEVEPSS 32%analysed7.5CVE-2025-31125Vite dev server improper access control exposes arbitrary filesVite's dev server fails to restrict file access when a request uses the ?inline&import or ?raw?import query patterns, allowing content of files that …KEVEPSS 65%analysed5.5CVE-2026-20805Windows Desktop Window Manager information disclosureDesktop Windows Manager (DWM) in Microsoft Windows exposes sensitive information to an unauthorized actor, allowing a local attacker with existing ac…KEVEPSS 7.2%analysed7.5CVE-2021-41277Metabase custom GeoJSON map feature allows local file inclusionMetabase does not validate URLs supplied through the custom GeoJSON map setting (admin->settings->maps->custom maps->add a map) before loading them. …KEVEPSS 97%analysed8.6CVE-2024-24919Check Point Security Gateway information disclosure via remote access VPNCheck Point Security Gateways with Remote Access VPN or Mobile Access Software Blades enabled expose information to an unauthenticated attacker reach…KEVEPSS 100%analysed5.5CVE-2023-21237Android notification UI flaw hides foreground service alertsIn applyRemoteView of NotificationContentInflater.java, Android 13 mishandles notification UI so a foreground service notification can be hidden. The…KEVEPSS 0.27%analysed7.5CVE-2020-3259Cisco ASA and FTD web services memory disclosure via crafted URLCisco ASA and FTD web services interfaces mishandle buffer tracking when parsing invalid URLs, allowing memory contents to be read. The flaw affects …KEVEPSS 72%analysed

Source: NIST National Vulnerability Database (record CVE-2026-45553), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.