Jan 0.8.5 before 0.8.8 Workspace Guard Bypass via Dangling Symlink
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 0.8.8
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 0.8.8.
- 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
- Severity5.7/10CVSS 5.7
- No patch0/5No signal
What would change the score
- Would score about 61 if added to CISA KEV
- Would score about 56 if CISA's SSVC rates exploitation active
- Would score about 28 if advisories confirm default setups are exposed
CVE-2026-122235 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.7 (medium) and affects jan; fixed in 0.8.8.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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? →
- 6/100 · provisional
- Fix
- Fixed in 0.8.8
- 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
Jan, an AI assistant application, from 0.8.5 before 0.8.8 has a workspace guard bypass in its agent tools that lets a local attacker write files outside the workspace by following dangling symlinks, which can lead to changes such as planting an authorized_keys file in a user's home directory. Exploitation requires the victim to take an action, such as opening a malicious repository and having the agent process its prompts.
Read the original description
Jan from 0.8.5 before 0.8.8 contains a workspace guard bypass vulnerability in the agent-tools gate.rs that allows attackers to write files outside the workspace via dangling symlinks. Attackers supplying a malicious repository can use prompt injection to make the write or edit tools follow symlinks, creating files like ~/.ssh/authorized_keys on the host.
What to do
Upgrade to a fixed version: 0.8.8.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- janhq jan
From 0.8.5 · fixed in 0.8.8
Evidence 5
- Advisory
- Patch
- Patch
- Repository
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-122235
Is CVE-2026-122235 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-2026-122235?
jan: from 0.8.5 before 0.8.8.Source: cve.now feed data
How do I fix CVE-2026-122235?
Upgrade to a fixed version: 0.8.8.Source: cve.now feed data