Vulnerability · Published Aug 25, 2026 · Assigned by GitHub_M

CVE-2026-55609sublinear-time-solver: Arbitrary file write in consciousness-explorer / sublinear-time-solver MCP export_state

High 7.1

In plain English

A high-severity security flaw in sublinear-time-solver from ruvnet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.2%top 93.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

sublinear-time-solver is a Rust and WebAssembly library for solving asymmetric diagonally dominant systems in sublinear time. Prior to consciousness-explorer 1.1.2 and sublinear-time-solver 1.6.0, the export_state and import_state tools in src/consciousness-explorer/mcp/server.js pass the attacker-controlled filepath parameter to filesystem operations in src/consciousness-explorer/index.js without restricting the destination or rejecting traversal. The saveVectorToFile and loadVectorFromFile tools in src/mcp/server.ts contain the same sink class through the file_path parameter. An attacker able to invoke the MCP tools can read, write, or overwrite any file accessible to the server process, causing confidentiality and integrity loss and possible service disruption. This issue is fixed in consciousness-explorer 1.1.2 and sublinear-time-solver 1.6.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	consciousness-explorer	1.1.2	GHSA-xc9g-j69q-37xw
npm	sublinear-time-solver	1.6.0	GHSA-xc9g-j69q-37xw

Affected products (as reported)

Vendor	Product	Versions
ruvnet	sublinear-time-solver	< 1.6.0

Weakness: CWE-73 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References

https://github.com/ruvnet/sublinear-time-solver/security/advisories/GHSA-xc9g-j69q-37xw x_refsource_CONFIRM
https://github.com/BruceJqs/public_exp/issues/32 x_refsource_MISC
https://github.com/ruvnet/sublinear-time-solver/issues/19 x_refsource_MISC
https://github.com/ruvnet/sublinear-time-solver/pull/20 x_refsource_MISC
https://github.com/ruvnet/sublinear-time-solver/commit/a701296e363192be863e79d788fa268095e3d229 x_refsource_MISC
https://github.com/ruvnet/sublinear-time-solver/commit/ea9a212b69e4449ec443fe088a7aec7546f70b4a x_refsource_MISC
https://github.com/ruvnet/sublinear-time-solver/releases/tag/v1.6.0 x_refsource_MISC