PT-2026-24401

Name of the Vulnerable Software and Affected Versions Envoy versions prior to 1.34.13 Envoy versions prior to 1.35.8 Envoy versions prior to 1.36.5 Envoy versions prior to 1.37.1 Description Envoy is a high-performance edge/middle/service proxy. A crash may occur in the rate limit filter when the...

PT-2026-24623

Summary At the rate limit filter, if we enabled the response phase limit with apply on stream done in the rate limit configuration and the response phase limit request fails directly, it may crash Envoy. Details When both the request phase limit and response phase limit are enabled, the safe gRPC...

CVE-2026-30827

A flaw was found in express-rate-limit. The default key generator incorrectly applies IPv6 subnet masking to IPv4-mapped IPv6 addresses, which are used when an IPv4 client connects to a dual-stack server. This misconfiguration causes all IPv4 traffic to be treated as a single entity for rate...

CVE-2026-30827

express-rate-limit is a basic rate-limiting middleware for Express. In versions starting from 8.0.0 and prior to versions 8.0.2, 8.1.1, 8.2.2, and 8.3.0, the default keyGenerator in express-rate-limit applies IPv6 subnet masking /56 by default to all addresses that net.isIPv6 returns true for. Th...

CVE-2026-30827

express-rate-limit is a basic rate-limiting middleware for Express. In versions starting from 8.0.0 and prior to versions 8.0.2, 8.1.1, 8.2.2, and 8.3.0, the default keyGenerator in express-rate-limit applies IPv6 subnet masking /56 by default to all addresses that net.isIPv6 returns true for. Th...

CVE-2026-30827 express-rate-limit: IPv4-mapped IPv6 addresses bypass per-client rate limiting (all IPv4 clients share one bucket on dual-stack servers)

express-rate-limit is a basic rate-limiting middleware for Express. In versions starting from 8.0.0 and prior to versions 8.0.2, 8.1.1, 8.2.2, and 8.3.0, the default keyGenerator in express-rate-limit applies IPv6 subnet masking /56 by default to all addresses that net.isIPv6 returns true for. Th...

CVE-2026-30827

CVE-2026-30827 affects express-rate-limit for Express. The default keyGenerator mishandles IPv4 when the system treats IPv4 addresses as IPv6 mapped (IPv4-mapped IPv6 addresses like ::ffff:x.x.x.x). On dual-stack servers, this causes a /56 subnet mask to be applied to all IPv6 addresses, making a...

CVE-2026-30827 express-rate-limit: IPv4-mapped IPv6 addresses bypass per-client rate limiting (all IPv4 clients share one bucket on dual-stack servers)

express-rate-limit is a basic rate-limiting middleware for Express. In versions starting from 8.0.0 and prior to versions 8.0.2, 8.1.1, 8.2.2, and 8.3.0, the default keyGenerator in express-rate-limit applies IPv6 subnet masking /56 by default to all addresses that net.isIPv6 returns true for. Th...

CVE-2026-30827 express-rate-limit: IPv4-mapped IPv6 addresses bypass per-client rate limiting (all IPv4 clients share one bucket on dual-stack servers)

express-rate-limit is a basic rate-limiting middleware for Express. In versions starting from 8.0.0 and prior to versions 8.0.2, 8.1.1, 8.2.2, and 8.3.0, the default keyGenerator in express-rate-limit applies IPv6 subnet masking /56 by default to all addresses that net.isIPv6 returns true for. Th...

express-rate-limit 安全漏洞

Express-Rate-Limit is a request frequency limiting middleware developed by Express Rate Limit. Versions prior to 8.0.0, 8.1.1, 8.2.2, and 8.3.0 of Express-Rate-Limit have security vulnerabilities. These vulnerabilities stem from the improper application of subnet masks by the default key generato...

@igea/oac_backend (>=1.0.35 <=1.0.115), @igea/oac_frontend (>=1.0.31 <=1.0.111) +12 more potentially affected by CVE-2026-30827 via express-rate-limit (=8.1.0)

express-rate-limit NPM version =8.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on express-rate-limit and may be impacted: - @igea/oacbackend =1.0.35, =1.0.31, =7.0.0, =2.0.0-test.19, =0.1.0, =0.29.0, =0.16.0, =0.42.0, =0.27.0, =0.42.0, =0.70.0,...

@chrisleekr/mcp-server-playground (>=1.1.0-dev-1d08adb.1 <=1.1.0-dev-ff904e8.1) potentially affected by CVE-2026-30827 via express-rate-limit (=8.0.1)

express-rate-limit NPM version =8.0.1 is affected by a known vulnerability. The following packages have a transitive dependency on express-rate-limit and may be impacted: - @chrisleekr/mcp-server-playground =1.1.0-dev-1d08adb.1, =1.1.0-dev-ff904e8.1 Source cves: CVE-2026-30827 Source advisory:...

Allocation of Resources Without Limits or Throttling

Overview express-rate-limit is a Basic IP rate-limiting middleware for Express. Use to limit repeated requests to public APIs and/or endpoints such as password reset. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the ipKeyGenerator...

@chrisleekr/mcp-server-playground (>=1.1.0-dev-1d08adb.1 <=1.1.0-dev-ff904e8.1) potentially affected by CVE-2026-30827 via express-rate-limit (=8.0.1)

express-rate-limit NPM version =8.0.1 is affected by a known vulnerability. The following packages have a transitive dependency on express-rate-limit and may be impacted: - @chrisleekr/mcp-server-playground =1.1.0-dev-1d08adb.1, =1.1.0-dev-ff904e8.1 Source cves: CVE-2026-30827 Source advisory:...

@igea/oac_backend (>=1.0.35 <=1.0.115), @igea/oac_frontend (>=1.0.31 <=1.0.111) +12 more potentially affected by CVE-2026-30827 via express-rate-limit (=8.1.0)

express-rate-limit NPM version =8.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on express-rate-limit and may be impacted: - @igea/oacbackend =1.0.35, =1.0.31, =7.0.0, =2.0.0-test.19, =0.1.0, =0.29.0, =0.16.0, =0.42.0, =0.27.0, =0.42.0, =0.70.0,...

@chrisleekr/mcp-server-playground (>=1.1.0 <=1.1.2-dev-ed23132.1), @intlayer/backend (>=7.0.9-canary.2 <=7.5.9) +29 more potentially affected by CVE-2026-30827 via express-rate-limit (=8.2.1)

express-rate-limit NPM version =8.2.1 is affected by a known vulnerability. The following packages have a transitive dependency on express-rate-limit and may be impacted: - @chrisleekr/mcp-server-playground =1.1.0, =7.0.9-canary.2, =1.597.450, =4.0.0, =3.1.0, =0.0.1-canary.1, =0.42.0, =0.20.0,...

GHSA-46WH-PXPV-Q5GQ express-rate-limit: IPv4-mapped IPv6 addresses bypass per-client rate limiting on servers with dual-stack network

Summary The default keyGenerator in express-rate-limit applies IPv6 subnet masking /56 by default to all addresses that net.isIPv6 returns true for. This includes IPv4-mapped IPv6 addresses ::ffff:x.x.x.x, which Node.js returns as request.ip on dual-stack servers. Because the first 80 bits of all...

@chrisleekr/mcp-server-playground (>=1.1.0 <=1.1.2-dev-ed23132.1), @intlayer/backend (>=7.0.9-canary.2 <=7.5.9) +29 more potentially affected by CVE-2026-30827 via express-rate-limit (=8.2.1)

express-rate-limit NPM version =8.2.1 is affected by a known vulnerability. The following packages have a transitive dependency on express-rate-limit and may be impacted: - @chrisleekr/mcp-server-playground =1.1.0, =7.0.9-canary.2, =1.597.450, =4.0.0, =3.1.0, =0.0.1-canary.1, =0.42.0, =0.20.0,...

PT-2026-23791

Name of the Vulnerable Software and Affected Versions express-rate-limit versions 8.0.0 through 8.0.1 express-rate-limit versions 8.1.0 through 8.1.1 express-rate-limit versions 8.2.0 through 8.2.1 Description The default keyGenerator in express-rate-limit incorrectly applies IPv6 subnet masking ...

CVE-2026-27801 Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement

Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwardenrs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a user’s account can exploit this bypass ...