Vulnerability in Romkatv Powerlevel10k
CVE-2026-122136
Powerlevel10k before 1.20.19 contains a symlink following vulnerability in _p9k_dump_instant_prompt that allows local attackers to overwrite victim-writable files via a predictable temporary path. Attackers can pre-plant symlinks at p10k-instant-prompt-output-<user>-<pid> in TMPDIR, guessing the victim's shell PID, so shell startup truncates and overwrites targeted files.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/romkatv/powerlevel10k (product)
- github.com/romkatv/powerlevel10k/blob/v1.20.0/internal/p10k.zsh (technical-description)
- github.com/romkatv/powerlevel10k/commit/7ddd1b2715c3844275214347a3572ac1fdd6dc39 (patch)
- GitHub Issue #2972 (issue-tracking)
- VulnCheck Advisory: Powerlevel10k before 1.20.19 Symlink Following via Instant Prompt Temporary File (third-party-advisory)
Frequently asked questions
- What is CVE-2026-122136?
- CVE-2026-122136 is a medium-severity vulnerability in Romkatv Powerlevel10k, classified under Improper Link Resolution Before File Access. CVSS score: 4.4/10. Published 2026-11-04.
- How severe is CVE-2026-122136?
- Medium severity. CVSS v3 base score is 4.4 out of 10.