CVE-2026-122137 (CVSS 6.7)

Description

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.

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CVSS v3.1 Score

6.7

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-377 CWE-377

References

Other References

https://github.com/romkatv/gitstatus/commit/5433ecbb9a572d6c92be9feb33642395fccc782b https://github.com/romkatv/powerlevel10k https://github.com/romkatv/powerlevel10k/blob/v1.20.0/gitstatus/install#L255-L256 https://github.com/romkatv/powerlevel10k/commit/98bd39fd335e3f9f560e48e5c1957cb2a6a212c4 https://github.com/romkatv/powerlevel10k/issues/2972 https://www.vulncheck.com/advisories/powerlevel10k-before-1.20.19-insecure-temporary-directory-via-gitstatus-installer

Frequently Asked Questions

What is CVE-2026-122137? +

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. It has a CVSS v3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2026-122137? +

CVE-2026-122137 has a CVSS v3.1 score of 6.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-122137? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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