CVE-2021-44906
Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).
CVSS
9.8
Crítica
EPSS
4.6%
p92
KEV
—
Exploit Today
28
0-100
Publicado: 17 de mar. de 2022 · Última mod.: 8 de out. de 2026 · CWE-1321
4.6%EPSS · 30 dias4.6%
2026-10-172026-11-13
Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).
- github.comhttps://github.com/Marynk/JavaScript-vulnerability-detection/blob/main/minimist%20PoC.zip
- github.comhttps://github.com/substack/minimist/blob/master/index.js#L69
- github.comhttps://github.com/substack/minimist/issues/164
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240621-0006/
- snyk.iohttps://snyk.io/vuln/SNYK-JS-MINIMIST-559764
- stackoverflow.comhttps://stackoverflow.com/questions/8588563/adding-custom-properties-to-a-function/20278068#20278068
- github.comhttps://github.com/Marynk/JavaScript-vulnerability-detection/blob/main/minimist%20PoC.zip
- github.comhttps://github.com/substack/minimist/blob/master/index.js#L69
- github.comhttps://github.com/substack/minimist/issues/164
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240621-0006/
- snyk.iohttps://snyk.io/vuln/SNYK-JS-MINIMIST-559764
- stackoverflow.comhttps://stackoverflow.com/questions/8588563/adding-custom-properties-to-a-function/20278068#20278068
CVECVSSEPSSKEVRExploitTítuloMod.
CVE-2026-1283377.0 ALT39.2%
——12ExcelJS through 4.4.0 contains a prototype pollution vulnerability in mergeConditionalFormattings that allows attackers to modify Object.prototype by supplying an x14:cfRule id of __proto__. Attackers can craft an xlsx file that, when loaded with xlsx.load(), sets properties such as type, direction, border and cfvo on every object in the process until it restarts.2dCVE-2026-1283364.8 MÉD37.3%
——11ExcelJS through 4.4.0 contains a prototype pollution vulnerability that allows attackers to add numeric keys to Object.prototype through a crafted defined name referencing a __proto__ sheet. Attackers can supply an xlsx whose xl/workbook.xml definedName range targets __proto__, causing CellMatrix to write empty arrays onto Object.prototype process-wide when workbook.xlsx.load() runs.2dCVE-2026-1263455.3 MÉD43.1%
——13basic-ftp is an FTP client for Node.js. Prior to 6.2.4, the MLSD directory-listing parser in src/parseListMLSD.ts uses untrusted fact names from the FTP server as keys in the plain-object factHandlersByName dictionary without checking that the resolved property is an own handler. A fact named __proto__ therefore resolves to Object.prototype, bypasses the missing-handler guard, and is called as though it were a function, producing a TypeError. The error propagates through Client.list() and APIs that depend on it because it is not an FTPError. A malicious or compromised FTP server, or an on-path attacker on a plaintext FTP session, can make the affected operation reject, and the Node.js process terminates under the default behavior in Node.js 15 and later only if the application leaves that rejection unhandled. This issue is fixed in version 6.2.4.3dCVE-2026-1265707.6 ALT37.2%
——11Padloc 4.0.0 before 4.3.1 contains a prototype pollution vulnerability that allows SCIM token holders to modify Object.prototype by sending crafted SCIM PATCH paths to ScimServer._handleScimUsersPatch(). Attackers can supply paths like __proto__.x or constructor.prototype.x passed to setPath() to pollute the shared server process, disrupting requests for all other organizations.3dCVE-2026-1251186.5 MÉD34.8%
——10Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.12, 7.8.13, 8.24.7, and 9.11.4, Schema.prototype.virtual() builds nested virtual paths without applying the special-property validation already used by Schema.path() and Schema.add(). An attacker who can influence virtual field names in dynamic schemas, content-management form builders, or schema-as-code systems can supply path segments such as __proto__, constructor, or prototype, causing the virtual-path reducer to write enumerable properties to Object.prototype or Function.prototype. The resulting prototype pollution can spoof inherited property checks such as authorization flags and can provide function-prototype gadget state to other server-side JavaScript code. This issue is fixed in versions 6.13.12, 7.8.13, 8.24.7, and 9.11.4.1dCVE-2026-1251178.2 ALT48.5%
——15Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.12, 7.8.13, 8.24.7, and 9.11.4, Mongoose can descend into inherited properties while loading database documents in init(), setting dotted paths in $__set, and merging update documents in utils.mergeClone. Attacker-controlled keys such as toString or valueOf can therefore cause Mongoose to write into shared built-in functions instead of an own property. A crafted document, Mixed path, non-strict document or subdocument, findOneAndReplace() replacement, chained update, or Query.prototype.merge() source can overwrite Object.prototype.toString.call, causing later queries on unrelated models to fail until the process restarts. Separately, when an attacker controls the dotted path passed to doc.set(path, value) for a subdocument configured with strict: false, descent through $__set can reach $__schema and alter shared validators or schema options for later documents. Mongoose already blocks __proto__, constructor, and prototype, so this issue overwrites properties on reachable shared objects rather than adding new properties directly to Object.prototype. This issue is fixed in versions 6.13.12, 7.8.13, 8.24.7, and 9.11.4.3d