boxscore/security
CVE · referencelatest edition

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-2026-81835

RooCodeInc Roo-Code MCP Integration Trust Model malicious_mcp_server.py fetch_instructions code injection
  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   P   L   L   L    2.0   .0030   20.6     —
AFFECTED
  Product   Versions  Fixed
  Roo-Code  3.51.0 –  —
TIMELINE
  Aug 27  Reserved by VulDB
  Aug 27  Published (CNA: VulDB)
  Aug 28  RESCORED — CVE-2026-81835 (RooCodeInc Roo-Code). CVSS 5.1 → 2 (NVD).
CWE-74, CWE-94 · CNA: VulDB · CVSS v4.0 · 5 references · NVD status: Deferred

Description

A security vulnerability has been detected in RooCodeInc Roo-Code up to 3.51.1. This affects the function fetch_instructions of the file malicious_mcp_server.py of the component MCP Integration Trust Model. The manipulation leads to code injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. Multiple isses were reported to the vendor beforehand. They explain, that "they all apply to Roo Code, a project we no longer support - the repository was archived a while ago, and we don't encourage anyone to use it." This vulnerability only affects products that are no longer supported by the maintainer.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
August 27, 2026ReservedReserved by VulDB
August 27, 2026PublishedPublished (CNA: VulDB)
August 28, 2026RESCOREDRESCORED — CVE-2026-81835 (RooCodeInc Roo-Code). CVSS 5.1 → 2 (NVD).

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
RooCodeIncRoo-Code—3.51.0—

Weaknesses

CWE-74 · CWE-94

References (5)

Related

Authoritative record: CVE-2026-81835 at cve.org

Vendors: roocodeinc

Weaknesses: CWE-74 · CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81835 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.