CVE-2026-55609sublinear-time-solver: Arbitrary file write in consciousness-explorer / sublinear-time-solver MCP export_state
- 7.1HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. 2 references of the record are tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits2
References tagged exploit2 references
- https://github.com/BruceJqs/public_exp/issues/32 (opens in a new tab)x_refsource_MISCexploit
- https://github.com/ruvnet/sublinear-time-solver/issues/19 (opens in a new tab)x_refsource_MISCexploit
Timeline
ID reserved
By GitHub_M
- 2 months later
· 2 months later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
ruvnet · sublinear-time-solver
- affected < 1.6.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmconsciousness-explorerGHSA-xc9g-j69q-37xw (opens in a new tab)
- npmsublinear-time-solverGHSA-xc9g-j69q-37xw (opens in a new tab)
References
References7
- https://github.com/ruvnet/sublinear-time-solver/security/advisories/GHSA-xc9g-j69q-37xw (opens in a new tab)x_refsource_CONFIRM
- https://github.com/BruceJqs/public_exp/issues/32 (opens in a new tab)x_refsource_MISCexploit
- https://github.com/ruvnet/sublinear-time-solver/issues/19 (opens in a new tab)x_refsource_MISCexploit
- https://github.com/ruvnet/sublinear-time-solver/pull/20 (opens in a new tab)x_refsource_MISC
- https://github.com/ruvnet/sublinear-time-solver/commit/a701296e363192be863e79d788fa268095e3d229 (opens in a new tab)x_refsource_MISC
- https://github.com/ruvnet/sublinear-time-solver/commit/ea9a212b69e4449ec443fe088a7aec7546f70b4a (opens in a new tab)x_refsource_MISC
- https://github.com/ruvnet/sublinear-time-solver/releases/tag/v1.6.0 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-65706 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-xc9g-j69q-37xw (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-55609)Record last updated .