Pi: Predictable temporary extension install paths allow local privilege escalation on shared Linux hosts_CVE-2026-54328

{
    "lastseen": "",
    "description": "Pi is a minimal terminal coding harness. From 0.74.0 until 0.78.1, Pi versions with temporary npm or git extension package installs used predictable paths under the operating system temporary directory. On Linux-based multi-user systems, a local attacker who can write to the shared temporary directory could prepare the expected package location before another user runs pi with a temporary extension package source. Pi could then load attacker-controlled extension code in the victim user's process.  This vulnerability is fixed in 0.78.1.",
    "published": "2026-06-23T19:25:04.051Z",
    "modified": "2026-06-23T19:25:04.051Z",
    "type": "cve",
    "title": "Pi: Predictable temporary extension install paths allow local privilege escalation on shared Linux hosts",
    "source": "GitHub_M",
    "references": "https://github.com/earendil-works/pi/security/advisories/GHSA-jfgx-wxx8-mp94\nhttps://github.com/earendil-works/pi/pull/5345\nhttps://github.com/earendil-works/pi/commit/a98e087e5d08ea2a536bf73dbb0aebb87c3ef72e\nhttps://github.com/earendil-works/pi/commit/ea3465a8e371a12d0167a06b60f93878e3a3df44\nhttps://github.com/earendil-works/pi/releases/tag/v0.78.1",
    "id": "CVE-2026-54328",
    "bulletinFamily": "",
    "cwe": [
        "CWE-379"
    ],
    "cvelist": null,
    "sourceData": "earendil-works pi >= 0.74.0, < 0.78.1",
    "sourceHref": "",
    "cvss": {
        "score": 7.3,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "pi",
    "version": ">= 0.74.0, < 0.78.1",
    "vendor": "earendil-works",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}