Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-81845
arben-adm mcp-sequential-thinking Import Session/Export Session server.py export_session path traversal
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N L L L 2.1 .0050 40.4 —
AFFECTED
Product Versions Fixed
mcp-sequential-thinking 0.1 – 0.6.0
TIMELINE
Aug 27 Reserved by VulDB
Aug 27 Published (CNA: VulDB)
Aug 28 RESCORED — CVE-2026-81845 (arben-adm mcp-sequential-thinking). CVSS 5.3 → 2.1 (NVD).
Aug 31 EXPLOIT PUBLISHED — CVE-2026-81845 (arben-adm mcp-sequential-thinking). Public exploit reference added.
Description
A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function import_session/export_session of the file mcp_sequential_thinking/server.py of the component Import Session/Export Session. Such manipulation of the argument file_path leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.0 is recommended to address this issue. The name of the patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267. Upgrading the affected component is recommended.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| August 27, 2026 | Reserved | Reserved by VulDB |
| August 27, 2026 | Published | Published (CNA: VulDB) |
| August 28, 2026 | RESCORED | RESCORED — CVE-2026-81845 (arben-adm mcp-sequential-thinking). CVSS 5.3 → 2.1 (NVD). |
| August 31, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-81845 (arben-adm mcp-sequential-thinking). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| arben-adm | mcp-sequential-thinking | — | 0.1 | 0.6.0 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81845 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
