# CVE-2026-122137: Powerlevel10k before 1.20.19 Insecure Temporary Directory via gitstatus Installer

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

Powerlevel10k before 1.20.19 contains an insecure temporary directory vulnerability in the bundled gitstatus/install script that reuses attacker-creatable directories when mktemp fails. Local attackers can pre-create the predictable gitstatus-install.tmp directory to replace the extracted gitstatusd binary, which then executes with the victim's privileges.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/romkatv/gitstatus/commit/5433ecbb9a572d6c92be9feb33642395fccc782b
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/romkatv/powerlevel10k/commit/98bd39fd335e3f9f560e48e5c1957cb2a6a212c4

## Affected products and versions

- romkatv / powerlevel10k: ≥ 0; < 1.20.19 (affected, custom). Source: CNA: VulnCheck
- romkatv / gitstatus: ≥ 0; ≤ 1.5.5 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.4 (medium); CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 6.7 (medium); CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-377

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/romkatv/powerlevel10k/issues/2972 (CNA: VulnCheck; issue-tracking)

- https://github.com/romkatv/powerlevel10k (CNA: VulnCheck; product)

- https://github.com/romkatv/gitstatus/commit/5433ecbb9a572d6c92be9feb33642395fccc782b (CNA: VulnCheck; patch)

- https://github.com/romkatv/powerlevel10k/commit/98bd39fd335e3f9f560e48e5c1957cb2a6a212c4 (CNA: VulnCheck; patch)

- https://github.com/romkatv/powerlevel10k/blob/v1.20.0/gitstatus/install#L255-L256 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/powerlevel10k-before-1.20.19-insecure-temporary-directory-via-gitstatus-installer (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-122137; retrieved 2026-11-04; source updated 2026-11-04

Revision: 440192bcee527a837b3362ed75445f3f108e50d44047134d06683ff71ca6b895

Canonical: https://y2.dev/cve/CVE-2026-122137

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