Vulnerability · Published Jun 23, 2026 · Assigned by GitHub_M
CVE-2026-54328Pi: Predictable temporary extension install paths allow local privilege escalation on shared Linux hosts
High 7.3
In plain English
A high-severity security flaw in pi from earendil-works. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @earendil-works/pi-coding-agent | 0.78.1 | GHSA-jfgx-wxx8-mp94 |
| npm | @mariozechner/pi-coding-agent | no fix listed | GHSA-jfgx-wxx8-mp94 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| earendil-works | pi | >= 0.74.0, < 0.78.1 |
Weakness: CWE-379 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/earendil-works/pi/security/advisories/GHSA-jfgx-wxx8-mp94 x_refsource_CONFIRM
- https://github.com/earendil-works/pi/pull/5345 x_refsource_MISC
- https://github.com/earendil-works/pi/commit/a98e087e5d08ea2a536bf73dbb0aebb87c3ef72e x_refsource_MISC
- https://github.com/earendil-works/pi/commit/ea3465a8e371a12d0167a06b60f93878e3a3df44 x_refsource_MISC
- https://github.com/earendil-works/pi/releases/tag/v0.78.1 x_refsource_MISC