← Vulnerability feed

Vulnerability record · CVE-2026-53966 · published 15 September 2026

CVE-2026-53966: Missing authorization vulnerability

XWiki Platform is a generic wiki platform. From 13.4-rc-1 until 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1, the Live Data edit REST API allows a user who can edit a page to change that page's rights without executing the normal document-saving authorization checks. The user can grant script right and then execute potentially dangerous Velocity scripts or send unfiltered HTML and JavaScript to clients. The same missing checks can circumvent extension security controls implemented as listeners for UserUpdatingDocumentEvent and related user document events. This issue is fixed in versions 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1.

7.1 CVSS 4.0 High EPSS 0.77% · top 46.2% CWE-862 · Missing authorization Received
7.1CVSS 4.0 base score
0.77%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
10References
15 Sep 2026Last modified by NVD

Description

XWiki Platform is a generic wiki platform. From 13.4-rc-1 until 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1, the Live Data edit REST API allows a user who can edit a page to change that page's rights without executing the normal document-saving authorization checks. The user can grant script right and then execute potentially dangerous Velocity scripts or send unfiltered HTML and JavaScript to clients. The same missing checks can circumvent extension security controls implemented as listeners for UserUpdatingDocumentEvent and related user document events. This issue is fixed in versions 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/xwiki/xwiki-platform/commit/1ddb954767e50782be960b953b012c1242f6843b
https://github.com/xwiki/xwiki-platform/commit/448b0f074cc6711410eb2647c4740454c92d1626
https://github.com/xwiki/xwiki-platform/commit/778b82b4806ce7ebddb775f953545ff73b841f8b
https://github.com/xwiki/xwiki-platform/commit/fbad7dac8f46c560577e41b9259cbbbbd343e6fc
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-16.10.17
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.10.4
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.4.10
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-18.1.0-rc-1
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-45ph-gxxr-gwgw
https://jira.xwiki.org/browse/XWIKI-23986

Track CVE-2026-53966 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.

9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed7.8CVE-2022-0492Linux kernel cgroups v1 release_agent privilege escalation and container escapeThe Linux kernel's cgroup_release_agent_write in kernel/cgroup/cgroup-v1.c mishandles authorization, letting the cgroups v1 release_agent feature be …KEVEPSS 5.5%analysed9.9CVE-2024-57726SimpleHelp missing authorization lets low-privilege technicians escalate to adminSimpleHelp remote support software v5.5.7 and earlier fails to properly authorize API key creation, allowing low-privilege technicians to mint API ke…KEVEPSS 67%analysed8.8CVE-2023-52163Digiever DS-2105 Pro time_tzsetup.cgi command injectionDigiever DS-2105 Pro firmware 3.1.0.71-11 exposes time_tzsetup.cgi to command injection, and the record also maps the issue to CWE-862 missing author…KEVEPSS 97%analysed6.6CVE-2025-40602SonicWall SMA1000 management console missing authorization privilege escalationThe SonicWall SMA1000 appliance management console (AMC) contains a local privilege escalation flaw caused by insufficient authorization, mapped to C…KEVEPSS 2.8%analysed9.1CVE-2025-6205DELMIA Apriso missing authorization allows privileged accessDELMIA Apriso Releases 2020 through 2025 contain a missing authorization flaw (CWE-862) that lets an attacker obtain privileged access to the applica…KEVEPSS 73%analysed8.6CVE-2025-20362Cisco Secure Firewall ASA/FTD VPN web server missing authorizationThe VPN web server in Cisco Secure Firewall ASA and FTD software fails to properly validate user-supplied input in HTTP(S) requests, allowing access …KEVEPSS 87%analysed7.3CVE-2021-39226Grafana snapshot endpoints allow unauthenticated view and deleteGrafana exposes snapshot endpoints that resolve to the snapshot with the lowest database key when accessed via literal paths such as /dashboard/snaps…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2026-53966), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.