CVE-2026-84673
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
Vulnerability in Jenkins Customizable Header Plugin 295.v2544b_ca_19b_97 and earlier allows overwriting the plugin's appearance configuration through Stapler data binding, enabling attackers to configure a custom SVG icon with inline JavaScript, resulting in stored XSS.
Risk Assessment
Risk of malicious script execution in the user's browser, potentially leading to session theft, account takeover, or other attacks within Jenkins context.
Recommendation
Update Jenkins Customizable Header Plugin to the latest version. Restrict plugin appearance configuration permissions to trusted administrators only.
Related vulnerabilities
- CVE-2026-89270Critical
The Popup Builder plugin for WordPress in versions up to and including 4.4.5 does not properly verify that a user is authorized to perform an action. An unauthenticated attacker can trash all published popups on the site with a single GET request, amplified by a second flaw in SGPopup::find() that causes the trash branch to fire against every popup simultaneously.
- CVE-2026-116557Critical
The WP Booking System – Booking Calendar plugin for WordPress in versions up to and including 2.1.0.5 lacks a capability check in the wpbs_action_ajax_calendar_remove_note() function. An authenticated attacker with Subscriber-level access or above can delete arbitrary calendar notes belonging to any calendar.
- CVE-2026-109220Critical
The PDF Invoice for WooCommerce + Drag and Drop Template Builder plugin in versions up to and including 7.1.1 is vulnerable to PHP Object Injection via the 'customer_note' parameter. The checkout field is insufficiently sanitized and passed to unserialize() without validation, allowing unauthenticated attackers to execute code on the server.
- CVE-2026-117656Critical
The pow-auth Assent library's Sign in with Apple strategy trusts the browser-supplied 'user' parameter, which the client controls. That parameter is merged over the verified ID token claims, allowing an unauthenticated remote attacker to impersonate another user. Affects versions from 0.1.25 before 0.3.2.
- CVE-2026-63377Critical
In TAKO AI Agent for Okta prior to 3.0.1-beta, the POST /api/auth/setup endpoint allows an unauthenticated network attacker to create the first administrator account before the legitimate owner completes initial setup. The initial_setup function checks only the is_setup flag and requires no authentication, bootstrap token, or network restriction, and the default configuration listens on 0.0.0.0:8001.
- CVE-2026-62863Critical
MoLing in SSE mode (started with -l) does not authenticate requests to the /sse and /message endpoints, and the mcp-go dependency sets Access-Control-Allow-Origin: *. A malicious web page can open a cross-origin EventSource to /sse, read the sessionId, and send unauthorized MCP tool calls via /message, potentially leading to file read/write or command execution. The issue is fixed in version 0.5.0.
- CVE-2026-62853Critical
In ThingLinks before 1.4.0, the /groovyScriptTest/registerScript endpoint accepts user-supplied Groovy script content and passes it to an unsandboxed compilation and loading flow. An authenticated attacker can supply code that is compiled and executed on the server, leading to remote server-side code execution. The issue affects the rule engine's Groovy script test/register flow and is fixed in version 1.4.0.
- CVE-2026-62849Critical
In ThingLinks before 1.4.0, an unauthenticated SQL injection vulnerability exists in the TDengine TDS APIs. JSON field values submitted to /anyUser/tds/insertTableData reach unsafe SQL construction in the TDS mapper, allowing a remote unauthenticated attacker to tamper with TDengine time-series data, including inserting unintended rows or overwriting existing readings. The issue is fixed in version 1.4.0.
- CVE-2026-117666Critical
The ssl_verify_fun library (deadtrickster) improperly validates certificates with host mismatch because try_match_wildcard/4 in src/ssl_verify_hostname.erl anchors only the text before and after the * in an identifier such as f*.example.net. This causes the wildcard to also consume dots, so the certificate is accepted for f.evil.example.net, and *.168.1.1 matches the IP literal 192.168.1.1. The issue affects versions from 1.0.1 before 1.1.8.
- CVE-2026-78403Critical
Stack-based buffer overflow and missing authorization in Thales Sentinel Keys Server on Windows. The server does not check the length of the first field in an HTTP request, allowing an attacker to send a crafted request and potentially achieve remote code execution as NT AUTHORITY\SYSTEM.
Original NVD description (English source)
Jenkins Customizable Header Plugin 295.v2544b_ca_19b_97 and earlier allows overwriting the plugin's appearance configuration through Stapler data binding, allowing attackers to configure a custom SVG icon containing inline JavaScript, resulting in a stored cross-site scripting (XSS) vulnerability.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

