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CVE-2026-118243

Highcharts Dashboards: `__proto__` data table id writes sync listeners to `Object.prototype`

Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards stores DataCursor listener and state maps in plain objects keyed by DataTable ID. A __proto__ table ID supplied through dataPool connector configuration resolves to Object.prototype, and sync registration creates an enumerable property there whose suffix can be influenced through the sync group option. The property is visible on every object, and lasting sync states can throw and stop features such as extremes synchronization. Exploitation requires untrusted dashboard configuration and an enabled component sync, but no user interaction beyond loading the board. This issue is fixed in 4.2.2.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Highcharts
Products
Highcharts
CVE-2026-116674

systeminformation: Prototype pollution in `networkStats()` via the interface name

systeminformation is a System and OS information library for node.js. Prior to 5.33.13, networkStats(ifaces) in lib/network.js on FreeBSD, OpenBSD, and NetBSD stores per-interface data in the plain-object _network cache and indexes it with the sanitized caller-controlled interface name. Passing proto causes the inherited Object.prototype value to be used instead of creating an own cache entry, so calcNetworkSpeed() writes rx_bytes, tx_bytes, rx_sec, tx_sec, ms, last_ms, and operstate onto Object.prototype. The polluted property names are fixed and their values come from interface statistics, but inherited-name collisions and enumerable keys can corrupt application branching, serialization, configuration merging, validation, or lookup behavior. This issue is fixed in version 5.33.13.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Sebhildebrandt
Products
Systeminformation
CVE-2022-2625

postgresql: Extension scripts replace objects not belonging to the extension.

A vulnerability was found in PostgreSQL. This attack requires permission to create non-temporary objects in at least one schema, the ability to lure or wait for an administrator to create or update an affected extension in that schema, and the ability to lure or wait for a victim to use the object targeted in CREATE OR REPLACE or CREATE IF NOT EXISTS. Given all three prerequisites, this flaw allows an attacker to run arbitrary code as the victim role, which may be a superuser.

CVSS 3.1 · 8.0 High EPSS 2.2% KEV · Not listed
Vendors
Fedoraproject Postgresql Redhat
Products
Fedora Postgresql Enterprise Linux and 5 more
CVE-2026-15195

apidevtools json-schema-ref-parser pointer.ts Pointer.set prototype pollution

A weakness has been identified in apidevtools json-schema-ref-parser. This impacts the function Refs.set/Pointer.set in the library lib/pointer.ts. Executing a manipulation can lead to improperly controlled modification of object prototype attributes. The attack can be launched remotely. Upgrading to version 15.3.6 will fix this issue. This patch is called a786bc6afc3674f650496472ee93d5cf74c4bd84. It is suggested to upgrade the affected component. The project maintainer confirms: "I reproduced prototype pollution through the public $Refs.set() API in published versions 7.1.4, 9.0.0, 11.0.0, 14.0.0, 14.2.1, 15.3.0, and 15.3.5. The same pointer is rejected by 15.3.6 without modifying Object.prototype. This reported path requires an application to pass an attacker-controlled pointer to $Refs.set(); dependency presence alone does not establish exploitability."

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Apidevtools
Products
Json-schema-ref-parser
CVE-2026-118248

Highcharts Dashboards: editableOptions.propertyPath writes to Object.prototype

Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards edit mode walks editableOptions propertyPath segments without rejecting prototype-related keys. An attacker who controls editableOptions can provide a path through __proto__ or constructor, and a user's edit writes the configured value onto Object.prototype. The property then becomes visible to JavaScript throughout the page, with consequences determined by the consuming application. This issue is fixed in 4.2.2.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Highcharts
Products
Dashboards Highcharts
CVE-2025-13204

CVE-2025-13204

npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Expr-eval Project Silentmatt
Products
Expr-eval Javascript Expression Evaluator
CVE-2026-107588

Multiple Vulnerabilities in the Highcharts Library Bundled with Vaadin Charts

Vaadin Charts renders charts with the Highcharts library and pins an exact version of it, 9.2.2 in Vaadin 22 to 24 and 12.2.0 in Vaadin 25, so an application cannot remove these vulnerabilities by upgrading Highcharts on its own. Highsoft disclosed several vulnerabilities in that library that are reachable through the chart configuration: writes to Object.prototype through dotted series.keys paths, and cross-site scripting through credits.href, through breadcrumbs.style, through HTML text parsing while printing, and through xlink:href attributes in exported charts. An application is affected where data an attacker controls reaches the chart configuration, for example through additionalOptions, through updateConfiguration(), or through text options that accept markup. The fixed Vaadin versions apply Highsoft's recommended workarounds to the bundled Highcharts when it loads, and keep the same Highcharts version. Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include: Product version Vaadin 22.0.0 - 23.6.15 Vaadin 24.0.0 - 24.4.23 Vaadin 24.5.0 - 24.7.15 Vaadin 24.8.0 - 24.9.22 Vaadin 24.10.0 - 24.10.10 Vaadin 25.0.0 - 25.2.9 Vaadin 25.3.0 Mitigation Upgrade to 23.6.16 Upgrade to 24.4.24 Upgrade to 24.7.16 Upgrade to 24.9.23 Upgrade to 24.10.11 Upgrade to 25.2.10 Upgrade to 25.3.1 or newer Please note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version. Artifacts Maven coordinates / Vulnerable versions / Fixed version com.vaadin:vaadin / 22.0.0 - 23.6.15 / >=23.6.16 com.vaadin:vaadin / 24.0.0 - 24.4.23 / >=24.4.24 com.vaadin:vaadin / 24.5.0 - 24.7.15 / >=24.7.16 com.vaadin:vaadin / 24.8.0 - 24.9.22 / >=24.9.23 com.vaadin:vaadin / 24.10.0 - 24.10.10 / >=24.10.11 com.vaadin:vaadin / 25.0.0 - 25.0.13 / >=25.2.10 com.vaadin:vaadin / 25.1.0 - 25.1.13 / >=25.2.10 com.vaadin:vaadin / 25.2.0 - 25.2.9 / >=25.2.10 com.vaadin:vaadin / 25.3.0 / >=25.3.1 com.vaadin:vaadin-charts-flow / 22.0.0 - 23.6.15 / >=23.6.16 com.vaadin:vaadin-charts-flow / 24.0.0 - 24.4.22 / >=24.4.24 com.vaadin:vaadin-charts-flow / 24.5.0 - 24.7.14 / >=24.7.15 com.vaadin:vaadin-charts-flow / 24.8.0 - 24.9.22 / >=24.9.23 com.vaadin:vaadin-charts-flow / 24.10.0 - 24.10.10 / >=24.10.11 com.vaadin:vaadin-charts-flow / 25.0.0 - 25.0.13 / >=25.2.10 com.vaadin:vaadin-charts-flow / 25.1.0 - 25.1.13 / >=25.2.10 com.vaadin:vaadin-charts-flow / 25.2.0 - 25.2.9 / >=25.2.10 com.vaadin:vaadin-charts-flow / 25.3.0 / >=25.3.1 com.vaadin:vaadin-charts-flow-svg-generator / 21.0.0 - 23.6.15 / >=23.6.16 com.vaadin:vaadin-charts-flow-svg-generator / 24.0.0 - 24.4.22 / >=24.4.24 com.vaadin:vaadin-charts-flow-svg-generator / 24.5.0 - 24.7.14 / >=24.7.15 com.vaadin:vaadin-charts-flow-svg-generator / 24.8.0 - 24.9.22 / >=24.9.23 com.vaadin:vaadin-charts-flow-svg-generator / 24.10.0 - 24.10.10 / >=24.10.11 com.vaadin:vaadin-charts-flow-svg-generator / 25.0.0 - 25.0.13 / >=25.2.10 com.vaadin:vaadin-charts-flow-svg-generator / 25.1.0 - 25.1.13 / >=25.2.10 com.vaadin:vaadin-charts-flow-svg-generator / 25.2.0 - 25.2.9 / >=25.2.10 com.vaadin:vaadin-charts-flow-svg-generator / 25.3.0 / >=25.3.1 npm packages npm package / Vulnerable versions / Fixed version @vaadin/charts / 22.0.0 - 23.6.6 / >=23.6.7 @vaadin/charts / 24.0.0 - 24.4.18 / >=24.4.19 @vaadin/charts / 24.5.0 - 24.7.12 / >=24.7.13 @vaadin/charts / 24.8.0 - 24.9.18 / >=24.9.19 @vaadin/charts / 24.10.0 - 24.10.6 / >=24.10.7 @vaadin/charts / 25.0.0 - 25.0.13 / >=25.2.14 @vaadin/charts / 25.1.0 - 25.1.14 / >=25.2.14 @vaadin/charts / 25.2.0 - 25.2.13 / >=25.2.14 @vaadin/charts / 25.3.0 / >=25.3.1

CVSS 4.0 · 8.4 High EPSS < 1% KEV · Not listed
Vendors
—
Products
—
CVE-2026-119569

Parse Server 9.0.0 before 9.10.5-alpha.9 Prototype Pollution Denial of Service

Parse Server before 8.6.108 and 9.0.0 before 9.10.5-alpha.9 contains a prototype pollution vulnerability because user-controlled keys are expanded into objects without own-property checks. Clients with class write access can send dot notation field keys or ACL entry names matching built-in object members to corrupt built-in functions, causing all requests to fail until server restart.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Parse Community Parseplatform
Products
Parse Server Parse-server
CVE-2026-29063

Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable

Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Immutable-js Redhat
Products
Immutable Immutable-js 3scale Api Management Platform and 25 more
CVE-2026-118678

n8n before 2.41.4 and 2.42.1 Prototype Pollution DoS via Workflow History Compaction

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a prototype pollution vulnerability that allows low-privileged users to alter built-in object behaviour by saving workflows with specially named connection keys. Attackers can add keys such as __proto__ to workflow connections, which the periodic history compaction task processes, causing logins and writes to fail with server errors.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
N8n
Products
N8n
CVE-2026-118649

n8n before 2.43.5 and 2.44.1 Authorization Bypass via Crafted Workflow ID in Data Tables

n8n before 2.43.5 and 2.44.x before 2.44.1 accepts a client-supplied workflow ID and caches each workflow's owner project in memory by that ID, so a crafted ID such as __proto__ makes the Data Table project check match every project. An authenticated member who can create and run workflows can list, read, modify, and delete Data Table rows in all projects of the instance.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
N8n
Products
N8n
CVE-2026-118249

Highcharts: series column construction writes to Object.prototype

Highcharts JS is a JavaScript charting library based on SVG. From 13.0.0 until 13.1.0, Highcharts builds series data columns by using point option keys directly as column IDs. Own enumerable __proto__ and constructor keys from parsed point objects can therefore direct integer-indexed writes to Object.prototype or the Object constructor. The inherited values affect reads and for-in enumeration across the page and can disrupt rendering or alter consuming application behavior without user interaction beyond rendering the chart. This issue is fixed in 13.1.0.

CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Highcharts
Products
Highcharts
CVE-2026-114142

toml-node: Prototype pollution: parsing a TOML document can write to Object.prototype

toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() can write attacker-controlled properties to Object.prototype because quoteDottedString() in lib/compiler.js produces the same bookkeeping string for distinct quoted key paths, allowing addTableArray() to clear another key's guard. The assign() path then descends through an unowned Date value without applying the owned-container check and can reach the prototype chain. Objects created elsewhere in the process can inherit the injected property. This issue is fixed in version 5.0.1.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Binarymuse
Products
Toml-node
CVE-2026-113659

ApostropheCMS: Client-side Prototype Pollution in apos.http.parseQuery leading to DOM-based XSS against authenticated users

ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, an unauthenticated attacker can send a crafted link whose query string is automatically parsed by apos.http.parseQuery when an authenticated victim loads a page with the admin bundle. The parser accepts the special __proto__, constructor, and prototype path keys, allowing browser prototype mutation that can reach an unsafe DOM sink and execute script in the victim's session; anonymous visitors do not load the affected admin context. This issue is fixed in version 4.33.0.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Apostrophecms
Products
Apostrophecms
CVE-2026-111172

@casl/ability 6.7.5 before 7.0.2 Prototype Pollution via rulesToFields setByPath

@casl/ability 6.7.5 before 7.0.2 contains a prototype pollution vulnerability in rulesToFields() that allows attackers to modify inherited builtins via dotted condition keys. Attackers controlling rule conditions can supply keys like 'toString.call' to alter shared builtin functions process-wide, causing denial of service for the Node.js process.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Stalniy
Products
Casl
CVE-2026-110111

Xen Orchestra before 6.9.0 Privilege Escalation via Prototype Pollution in vm.importFromEsxi

Xen Orchestra before 6.9.0 contains an improper access control vulnerability that allows any authenticated user to become global administrator by abusing the unprotected vm.importFromEsxi and vm.importMultipleFromEsxi methods. Attackers can point xo-server at a malicious ESXi host serving a crafted .vmx file with __proto__.permission set, polluting Object.prototype so permission-less accounts inherit admin rights and enabling remote code execution.

CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Vatesfr Xen-orchestra
Products
Xen-orchestra Xen Orchestra Server
CVE-2021-48012

fast-toml through 0.5.4 Prototype Pollution via __proto__ Keys in Parsed TOML

fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying TOML containing __proto__, constructor or prototype key segments. Attackers can pass [__proto__] or [constructor.prototype] table headers or __proto__.x dotted keys to parse() to pollute all objects, causing denial of service or authorization bypass.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Gin-quin
Products
Fast-toml
CVE-2026-55886

Jodit Editor: Prototype Pollution in Jodit via Jodit.modules.Helpers.set()

Jodit Editor is a WYSIWYG editor with written in pure TypeScript file and image editing capabilities. Versions prior to 4.12.26 are vulnerable to Prototype Pollution through Jodit.modules.Helpers.set(chain, value, obj), which walks the dot-separated chain, creating and following each path segment without filtering prototype-mutating keys. A chain that begins with (or contains) __proto__, constructor, or prototype lets the final assignment reach and mutate Object.prototype. Applications that pass a user-controlled or partially user-controlled key path into Jodit.modules.Helpers.set() could be vulnerable, causing unexpected property injection, logic bypass, denial of service, or secondary security issues. This issue has been fixed in version 4.12.26.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Xdan
Products
Jodit
CVE-2026-15699

spencermountain compromise Public Root API extend.js nlp.extend prototype pollution

A vulnerability was identified in spencermountain compromise up to 14.15.1. Affected is the function nlp.extend of the file src/API/extend.js of the component Public Root API. The manipulation of the argument plugin leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The identifier of the patch is b4644ab7179700df0607521f61c1ee9b5f78d89d. Applying a patch is the recommended action to fix this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Spencermountain
Products
Compromise