160 lines
7.7 KiB
JSON
160 lines
7.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-61546",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-07-10T16:27:03.094Z",
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"datePublished": "2026-10-28T21:40:16.081Z",
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"dateUpdated": "2026-10-29T18:24:59.680Z"
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},
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"containers": {
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"cna": {
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"title": "AnkiMCP: DNS rebinding reaches unauthenticated local AnkiMCP HTTP tools",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-346",
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"lang": "en",
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"description": "CWE-346: Origin Validation Error",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-350",
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"lang": "en",
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"description": "CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "PASSIVE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"subIntegrityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/ankimcp/anki-mcp-server-addon/security/advisories/GHSA-j9xx-59ph-wmr6",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/ankimcp/anki-mcp-server-addon/security/advisories/GHSA-j9xx-59ph-wmr6"
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},
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{
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"name": "https://github.com/ankimcp/anki-mcp-server-addon/commit/6dcb6939b0ecc0801f45cf0d241dc946aad1654f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/ankimcp/anki-mcp-server-addon/commit/6dcb6939b0ecc0801f45cf0d241dc946aad1654f"
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},
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{
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"name": "https://github.com/ankimcp/anki-mcp-server-addon/commit/d5306ff42d68f1e3b82a96878eb059437e820316",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/ankimcp/anki-mcp-server-addon/commit/d5306ff42d68f1e3b82a96878eb059437e820316"
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},
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{
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"name": "https://github.com/ankimcp/anki-mcp-server-addon/tree/v0.21.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/ankimcp/anki-mcp-server-addon/tree/v0.21.0"
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}
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],
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"affected": [
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{
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"vendor": "ankimcp",
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"product": "anki-mcp-server-addon",
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"versions": [
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{
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"version": "< 0.21.0",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-10-28T21:40:16.081Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "AnkiMCP is an Anki addon that implements an MCP server, enabling AI assistants to interact with the Anki flashcard application. Prior to version 0.21.0, `anki_mcp_server/mcp_server.py` globally disables FastMCP DNS-rebinding protection through `TransportSecuritySettings` with `enable_dns_rebinding_protection=False`, including for the default local Streamable HTTP listener. The defaults in `anki_mcp_server/config.py` enable `http_enabled` on `127.0.0.1:3141`, with an empty `http_path` selecting the root endpoint. No bearer token, API key, session secret, strict `Host` allowlist or strict `Origin` allowlist is enforced before `initialize`, `tools/list` and `tools/call` reach MCP dispatch. A victim who visits a malicious web page while Anki and the listener are running can have browser requests rebound to loopback, allowing the attacker to `initialize` MCP, enumerate tools, read the local collection, and perform enabled non-destructive note/deck creation or updates. The attacker needs neither LAN position nor a local process. Available operations depend on enabled tool filters; destructive tools are hidden unless `enabled_destructive_tools` is opted into, limiting deletion-level impact but not the exposed read/write operations. The reported harness confirms real MCP tool dispatch with substituted Anki bridge responses rather than demonstrating destructive changes to a real collection. Disabling protection for tunnels/proxies also disables it for the normal loopback configuration. This issue is fixed in version 0.21.0."
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}
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],
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"source": {
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"advisory": "GHSA-j9xx-59ph-wmr6",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/ankimcp/anki-mcp-server-addon/security/advisories/GHSA-j9xx-59ph-wmr6",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-10-29T18:24:19.481141Z",
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"id": "CVE-2026-61546",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-29T18:24:59.680Z"
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}
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}
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]
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}
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} |