Vulnerability in Earendil-Works Pi
CVE-2026-54328
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (5.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Earendil-Works Pi — versions >= 0.74.0, < 0.78.1
Weakness classification (CWE)
References
- github.com/earendil-works/pi/security/advisories/GHSA-jfgx-wxx8-mp94
- github.com/earendil-works/pi/pull/5345
- github.com/earendil-works/pi/commit/a98e087e5d08ea2a536bf73dbb0aebb87c3ef72e
- github.com/earendil-works/pi/commit/ea3465a8e371a12d0167a06b60f93878e3a3df44
- github.com/earendil-works/pi/releases/tag/v0.78.1
Frequently asked questions
- What is CVE-2026-54328?
- CVE-2026-54328 is a high-severity vulnerability in Earendil-Works Pi, classified under Creation of Temporary File in Directory with Insecure Permissions. CVSS score: 7.3/10. Published 2026-06-23.
- How severe is CVE-2026-54328?
- High severity. CVSS v3 base score is 7.3 out of 10.