Powerlevel10k before 1.20.19 Symlink Following via Instant Prompt Temporary File
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 1.20.19
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 1.20.19.
- Exploitation?/40Exploitation: unknown (data gap). No CISA SSVC exploitation rating yet
- Exposure?/25Exposure: unknown (data gap). No advisory context yet
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity4.1/10CVSS 4.1
- No patch0/5No signal
What would change the score
- Would score about 59 if added to CISA KEV
- Would score about 54 if CISA's SSVC rates exploitation active
- Would score about 26 if advisories confirm default setups are exposed
CVE-2026-122136 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.1 (medium) and affects powerlevel10k; fixed in 1.20.19.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 4/100 · provisional
- Fix
- Fixed in 1.20.19
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Powerlevel10k, a Zsh theme, before version 1.20.19 has a symlink-following flaw in its instant prompt temporary file handling. A local attacker with low privileges who can get a victim to start their shell can overwrite files the victim can write to.
Read the original 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.
What to do
Upgrade to a fixed version: 1.20.19.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- romkatv powerlevel10k
fixed in 1.20.19
Evidence 5
- Patch
- Report
- Repository
- Repository
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-122136
Is CVE-2026-122136 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-122136?
powerlevel10k: before 1.20.19.Source: cve.now feed data
How do I fix CVE-2026-122136?
Upgrade to a fixed version: 1.20.19.Source: cve.now feed data