Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck

CVE-2026-122136Powerlevel10k before 1.20.19 Symlink Following via Instant Prompt Temporary File

Medium 4.4

In plain English

A medium-severity security flaw in powerlevel10k from romkatv. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.1%top 98.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
romkatv	powerlevel10k	0 – before 1.20.19

Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

References

GitHub Issue #2972 issue-tracking
https://github.com/romkatv/powerlevel10k product
https://github.com/romkatv/powerlevel10k/commit/7ddd1b2715c3844275214347a3572ac1fdd6dc39 patch
https://github.com/romkatv/powerlevel10k/blob/v1.20.0/internal/p10k.zsh#L6445-L6452 technical-description
VulnCheck Advisory: Powerlevel10k before 1.20.19 Symlink Following via Instant Prompt Temporary File third-party-advisory