CVE-2026-48714 i18next-http-middleware missingKeyHandler does not reject keys whose segments contain prototype-polluting names

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. In versions prior to 3.9.7, the missingKeyHandler blocked the literal request-body keys proto, constructor, and prototype added in 3.9.3, see GHSA-5fgg-jcpf-8jjw, but did not...

0perator (>=0.1.0, <=0.3.0), 0pflow (>=0.1.0-dev.2580522, <=0.1.0) +3914 more potentially affected by CVE-2026-54285 via @opentelemetry/core (>=2.0.0, <=2.7.1)

@opentelemetry/core NPM version =2.0.0, =0.1.0, =0.1.0-dev.2580522, =0.1.1, =0.0.1, =1.3.0, =0.1.0, =1.2.2, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.8.0, =0.1.1, =0.1.1, =0.1.23 and more Source cves: CVE-2026-54285 Source advisory: SNYK:JS-OPENTELEMETRYCORE-17373280...

CVE-2026-48713

CVE-2026-48713 affects i18next-fs-backend prior to 2.6.6. The issue arises when crafted missing-key strings are persisted via missingKeyHandler, where Backend.writeFile() splits keys on keySeparator and the path walker could reach Object.prototype (e.g., a key like "proto .polluted"), allowing pr...

CVE-2026-48713 i18next-fs-backend: Prototype pollution via crafted missing-key string

Versions prior to 2.6.6 are vulnerable to prototype pollution via crafted missing-key strings when used to persist missing translation keys e.g. via i18next-http-middleware's missingKeyHandler exposed to untrusted input. Backend.writeFile splits each queued missing-key string on the configured...

CVE-2026-48713 i18next-fs-backend: Prototype pollution via crafted missing-key string

Versions prior to 2.6.6 are vulnerable to prototype pollution via crafted missing-key strings when used to persist missing translation keys e.g. via i18next-http-middleware's missingKeyHandler exposed to untrusted input. Backend.writeFile splits each queued missing-key string on the configured...

CVE-2026-48713 i18next-fs-backend: Prototype pollution via crafted missing-key string

Versions prior to 2.6.6 are vulnerable to prototype pollution via crafted missing-key strings when used to persist missing translation keys e.g. via i18next-http-middleware's missingKeyHandler exposed to untrusted input. Backend.writeFile splits each queued missing-key string on the configured...

10minions-engine (>=0.0.1, <=0.0.4), @0xr404/lol404 (>=1.1.0, <=1.1.6) +3440 more potentially affected by CVE-2026-54271 via protobufjs (>=7.0.0, <=7.6.1)

protobufjs NPM version =7.0.0, =0.0.1, =1.1.0, =1.0.1-beta.0, =0.0.2-beta.0, =1.0.0, =1.5.10, =0.10.1, =1.1.0, =6.0.0, =2.0.2, =3.3.3 and more Source cves: CVE-2026-54271 Source advisory: SNYK:JS-PROTOBUFJS-17362837...

@agentgate-hedera/mcp (>=0.1.1, <=0.1.7), @agentgate-hedera/passport (>=0.1.1, <=0.1.9) +82 more potentially affected by CVE-2026-54270 via protobufjs (>=8.2.0, <=8.4.2)

protobufjs NPM version =8.2.0, =0.1.1, =0.1.1, =1.16.0, =1.0.5, =0.0.4, =0.0.4, =0.0.4, =0.0.4, =0.1.37, =0.1.29, =9.1.1-az29, =9.1.1-az31 - @hiero-ledger/sdk 2.85.0 and more Source cves: CVE-2026-54270 Source advisory: SNYK:JS-PROTOBUFJS-17353318...

@remix-run/architect (>=2.17.3, <=2.17.4), @remix-run/cloudflare (>=2.17.3, <=2.17.4) +10 more potentially affected by CVE-2026-53663 via @remix-run/server-runtime (>=2.17.3, <=2.17.4)

@remix-run/server-runtime NPM version =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =2.17.3, =0.11.30, =0.12.30 Source cves: CVE-2026-53663 Source advisory: SNYK:JS-REMIXRUNSERVERRUNTIME-17342509...

DOMPurify: Hook mutation of `data.allowedTags` / `data.allowedAttributes` permanently pollutes `DEFAULT_ALLOWED_TAGS` / `DEFAULT_ALLOWED_ATTR`

Hook mutation of data.allowedTags / data.allowedAttributes permanently pollutes DEFAULTALLOWEDTAGS / DEFAULTALLOWEDATTR CWE: CWE-501 Trust Boundary Violation — hook-scoped mutation leaks to global default sets via CWE-693 Protection Mechanism Failure — the default allow-list is silently widened f...

GHSA-76MC-F452-CXCM DOMPurify: Hook mutation of `data.allowedTags` / `data.allowedAttributes` permanently pollutes `DEFAULT_ALLOWED_TAGS` / `DEFAULT_ALLOWED_ATTR`

Hook mutation of data.allowedTags / data.allowedAttributes permanently pollutes DEFAULTALLOWEDTAGS / DEFAULTALLOWEDATTR CWE: CWE-501 Trust Boundary Violation — hook-scoped mutation leaks to global default sets via CWE-693 Protection Mechanism Failure — the default allow-list is silently widened f...

Prototype Pollution

Overview org.webjars.npm:dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG. Affected versions of this package are vulnerable to Prototype Pollution in the INPLACE function when sanitizing a root element that is a with event handler attributes and a descendant element whose name...

@activepieces/piece-gmail (>=0.12.2, <=0.12.5), @activepieces/piece-sendgrid (>=0.5.3, <=0.5.5) +136 more potentially affected by CVE-2026-82660 via nodemailer (>=8.0.0, <=8.0.8)

nodemailer NPM version =8.0.0, =0.12.2, =0.5.3, =0.4.1, =3.19.2, =2.1.108, =0.0.1, =0.0.0-preview.10.8ccd25db, =6.1.196-alpha, =6.1.196-alpha, =6.1.196-alpha, =0.0.1, =3.35.0, =1.0.0-beta.1, =4.0.0-canary.13686, =7.0.0-canary.3009 and more Source cves: CVE-2026-82660 Source advisory:...

10minions-engine (>=0.0.1, <=0.0.4), @0xr404/lol404 (>=1.1.0, <=1.1.6) +3440 more potentially affected by CVE-2026-54269 via protobufjs (>=7.0.0, <=7.6.2)

protobufjs NPM version =7.0.0, =0.0.1, =1.1.0, =1.0.1-beta.0, =0.0.2-beta.0, =1.0.0, =1.5.10, =0.10.1, =1.1.0, =6.0.0, =2.0.2, =3.3.3 and more Source cves: CVE-2026-54269 Source advisory: SNYK:JS-PROTOBUFJS-17353168...

10secondsofcode-custom (1.0.0), 1kohei1 (>=1.0.0, <=1.0.1) +8254 more potentially affected by CVE-2026-12143 via form-data (>=4.0.0, <=4.0.5)

form-data NPM version =4.0.0, =1.0.0, =1.2.0, =1.0.0, =0.1.0, =0.0.1, =0.1.1, =5.0.0, =0.0.1, =1.0.1, =1.0.32, =1.0.32, =1.1.11 and more Source cves: CVE-2026-12143 Source advisory: OSV:GHSA-HMW2-7CC7-3QXX...

02.aula (1.0.0), 0xrtest (1.0.0) +10467 more potentially affected by CVE-2026-53550 via js-yaml (>=4.0.0, <=4.1.1)

js-yaml NPM version =4.0.0, =0.2.0, =0.0.3, =4.11.0, =0.0.1, =1.1.9, =0.1.23, =0.1.4, =6.1.5, =0.2.0, =0.14.0 and more Source cves: CVE-2026-53550 Source advisory: SNYK:JS-JSYAML-17342520...

org.webjars.npm:nestjs__platform-express (>=8.4.7, <=9.0.0-next.2) potentially affected by CVE-2026-5079 via org.webjars.npm:multer (1.4.4-lts.1)

org.webjars.npm:multer MAVEN version 1.4.4-lts.1 is affected by a known vulnerability. The following packages have a transitive dependency on org.webjars.npm:multer and may be impacted: - org.webjars.npm:nestjsplatform-express =8.4.7, =9.0.0-next.2 Source cves: CVE-2026-5079 Source advisory:...

Prototype Pollution

Overview jsonata is a JSON query and transformation language Affected versions of this package are vulnerable to Prototype Pollution via several functions, including createFrame and bind. An attacker can modify object prototype attributes directly. In an additional vector, the attacker can pollut...

Prototype Pollution

Overview org.webjars.npm:jsonata is a JSON query and transformation language Affected versions of this package are vulnerable to Prototype Pollution via several functions, including createFrame and bind. An attacker can modify object prototype attributes directly. In an additional vector, the...

jsonata: Function Binding Prototype Pollution via hasOwnProperty Override

A weakness has been identified in jsonata-js jsonata up to 2.2.0. The affected element is the function createFrame of the file src/jsonata.js of the component Function Binding Frame System. This manipulation causes improperly controlled modification of object prototype attributes. It is possible ...