{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-115478",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-22T15:06:52.738Z",
        "datePublished": "2026-10-23T14:06:28.128Z",
        "dateUpdated": "2026-10-23T14:06:28.128Z"
    },
    "containers": {
        "cna": {
            "title": "obsidian-tc: Memory-lifecycle tools overwrite unowned notes or partially commit lifecycle changes",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-459",
                            "lang": "en",
                            "description": "CWE-459: Incomplete Cleanup",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-863",
                            "lang": "en",
                            "description": "CWE-863: Incorrect Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 7.1,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-r3g7-r4hr-m258",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-r3g7-r4hr-m258"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/pull/978",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/pull/978"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/commit/99f7914ca0fbeed92e7c4d39cc8c3e5830dab133",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/commit/99f7914ca0fbeed92e7c4d39cc8c3e5830dab133"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/blob/v1.31.4/CHANGELOG.md",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/blob/v1.31.4/CHANGELOG.md"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.31.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.31.4"
                }
            ],
            "affected": [
                {
                    "vendor": "The-40-Thieves",
                    "product": "obsidian-tc",
                    "versions": [
                        {
                            "version": ">= 1.0.1, < 1.31.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-23T14:06:28.128Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. From 1.0.1 until 1.31.4, `create_entity`, `link_entities`, `rename_entity`, `unlink_entities` and `delete_entity` regenerate memory notes from SQLite at the computed `memory/<type>/<name>.md` path without reliably preserving note ownership or the consistency of a failed lifecycle operation. During shared materialization, a hand-authored note or an orphan left by a different entity whose name sanitized to the same path could have its entire body overwritten on the next write naming that type and name, with non-owned frontmatter preserved. `rename_entity` also seeded the destination path with a direct atomic write without validating ownership and could overwrite a foreign note there. Separately, several tools mutated SQLite before fallible filesystem work: `create_entity` and `link_entities` inserted the row or relation before materialization; `rename_entity` updated the entity, including a retired status, before updating its note; `unlink_entities` removed a relation before rematerializing the source note; and `delete_entity`'s cascade removed the target and its relations before rematerializing neighbouring notes. A later filesystem failure could therefore leave a row or relation changed and the memory graph inconsistent with the notes on disk even when the operation failed. An authorized caller with the required memory-tool permissions could, without intending to, destroy the body of a vault note outside the entity being written; `delete_entity` additionally requires its deletion permission and destructive confirmation, which this memory flaw does not bypass. Snapshots-before-write through `restore_note` mitigate the overwrite only where snapshots are enabled and the note had previously been written through obsidian-tc. This issue is fixed in version 1.31.4."
                }
            ],
            "source": {
                "advisory": "GHSA-r3g7-r4hr-m258",
                "discovery": "UNKNOWN"
            }
        }
    }
}