CVE-2026-54328

HIGHPre-NVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.3
EG Score
7.3(medium)
EPSS
1.8%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 25, 2026

Advisory Details (5)

Auto-updated Jun 24, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
github Patch Available

Predictable temporary extension install paths allow local privilege escalation on shared Linux hosts · Advisory · earendil-works/pi · GitHub

Affected: 0.78.1 released

https://github.com/earendil-works/pi/security/advisories/GHSA-jfgx-wxx8-mp94
github_release Patch Available

v0.78.1

Patch available: earendil-works/pi v0.78.1

https://github.com/earendil-works/pi/releases/tag/v0.78.1
github_pr

fix(coding-agent): move temporary extension cache

Fix merged in earendil-works/pi PR #5345 on 2026-06-02 — awaiting tagged release

https://github.com/earendil-works/pi/pull/5345
github_commit

commit ea3465a8e371 (earendil-works/pi)

Fix landed in earendil-works/pi commit ea3465a8e371 — awaiting tagged release

https://github.com/earendil-works/pi/commit/ea3465a8e371a12d0167a06b60f93878e3a3df44
github_commit

commit a98e087e5d08 (earendil-works/pi)

Fix landed in earendil-works/pi commit a98e087e5d08 — awaiting tagged release

https://github.com/earendil-works/pi/commit/a98e087e5d08ea2a536bf73dbb0aebb87c3ef72e

Vendor Advisories for CVE-2026-54328(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
npm(2)
PackageVulnerable rangeFixed inDependents
@earendil-works/pi-coding-agent—0.78.1—
@mariozechner/pi-coding-agent———

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 55× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 02:57 UTCEG score recompute
  2. 2026-07-06 15:57 UTCEG score recompute
  3. 2026-07-06 04:57 UTCEG score recompute
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 17:29 UTCEG score recompute
  7. 2026-07-05 06:30 UTCEG score recompute
  8. 2026-07-04 18:58 UTCEG score recompute
  9. 2026-07-04 07:58 UTCEG score recompute
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 20:09 UTCEG score recompute
  13. 2026-07-03 09:08 UTCEG score recompute
  14. 2026-07-02 22:09 UTCEG score recompute
  15. 2026-07-02 11:09 UTCEG score recompute
  16. 2026-07-01 23:44 UTCEG score recompute
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-07-01 12:44 UTCEG score recompute
  19. 2026-07-01 01:45 UTCEG score recompute
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 14:46 UTCEG score recompute
  22. 2026-06-30 03:42 UTCEG score recompute
  23. 2026-06-29 16:36 UTCEG score recompute
  24. 2026-06-29 05:37 UTCEG score recompute
  25. 2026-06-28 18:34 UTCEG score recompute
Show 30 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 07:33 UTCEG score recompute
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-27 20:34 UTCEG score recompute
  6. 2026-06-27 09:34 UTCEG score recompute
  7. 2026-06-27 03:08 UTCEPSS rescore
  8. 2026-06-26 22:35 UTCEG score recompute
  9. 2026-06-26 11:33 UTCEG score recompute
  10. 2026-06-25 21:17 UTCEG score recompute
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-25 10:18 UTCEG score recompute
  13. 2026-06-24 23:18 UTCEG score recompute
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-24 12:19 UTCEG score recompute
  16. 2026-06-24 01:14 UTCEG score recompute
  17. 2026-06-23 14:12 UTCEG score recompute
  18. 2026-06-23 03:07 UTCEG score recompute
  19. 2026-06-22 15:58 UTCEG score recompute
  20. 2026-06-22 04:50 UTCEG score recompute
  21. 2026-06-21 17:50 UTCEG score recompute
  22. 2026-06-21 06:27 UTCEG score recompute
  23. 2026-06-20 19:23 UTCEG score recompute
  24. 2026-06-20 08:16 UTCEG score recompute
  25. 2026-06-19 21:17 UTCEG score recompute
  26. 2026-06-19 10:17 UTCEG score recompute
  27. 2026-06-18 23:13 UTCEG score recompute
  28. 2026-06-18 12:08 UTCEG score recompute
  29. 2026-06-18 01:07 UTCEG score recompute
  30. 2026-06-17 14:07 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-54328?
CVE-2026-54328 is a high vulnerability published on June 17, 2026. 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…
When was CVE-2026-54328 disclosed?
CVE-2026-54328 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54328 actively exploited?
CVE-2026-54328 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54328?
CVE-2026-54328 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-54328?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54328, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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