CVE-2026-42260 Open-WebSearch: SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF wit...

CVE-2026-42260

Open-WebSearch CVE-2026-42260 describes a SSRF in fetchWebContent of the MCP tool where bracketed IPv6 literals and lack of DNS resolution allow bypassing the public URL checks. The vulnerability arises because isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts treat bracketed IPv6 h...

GHSA-V228-72C7-FX8J open-websearch has SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Summary src/utils/urlSafety.ts exposes isPublicHttpUrl / assertPublicHttpUrl, used to gate the MCP fetchWebContent tool against private-network targets. The check has two defects that together allow non-blind SSRF with the response body returned to the caller: 1. Bracketed IPv6 literals are never...

Amazon Linux 2 : runc, --advisory ALAS2NITRO-ENCLAVES-2025-072 (ALASNITRO-ENCLAVES-2025-072)

The version of runc installed on the remote host is prior to 1.3.2-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2NITRO-ENCLAVES-2025-072 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version...

MGASA-2025-0256 Updated golang packages fix security vulnerabilities

Insufficient validation of bracketed IPv6 hostnames in net/url. CVE-2025-47912 Unbounded allocation when parsing GNU sparse map in archive/tar. CVE-2025-58183 Parsing DER payload can cause memory exhaustion in encoding/asn1. CVE-2025-58185 Lack of limit when parsing cookies can cause memory...

Insufficient validation of bracketed IPv6 hostnames in net/url

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CVE-2025-47912 Insufficient validation of bracketed IPv6 hostnames in net/url

The Parse function permits values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://::1/". IPv4 addresses and hostnames mus...

CVE-2025-47912

The Parse function permits values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://::1/". IPv4 addresses and hostnames mus...