CVE-2026-122235: janhq jan · Link Following
Affects janhq janSource CVE Database V5
Not known to be exploited · CVSS 5.7 Medium : upgrade to 0.8.8 when convenient.
Data as of 4 Nov 2026, 21:19 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 5.7 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 4.7 |
- Patch
- Available – fixed in 0.8.8
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
What to do
Upgrade janhq jan to 0.8.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| janhqjan | Affected
| Fixed in
|
GitHubjanpkg:github/janOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade jan to version 0.8.8 or later, where this vulnerability is fixed. No other mitigation is indicated or required as the fix addresses the root cause of the workspace guard bypass.
Description
Jan versions from 0.8.5 up to but not including 0.8.8 have a vulnerability that allows attackers to bypass workspace protections and write files outside the intended workspace by exploiting dangling symbolic links. This can be triggered by supplying a malicious repository and using prompt injection to cause file write or edit tools to follow symlinks, potentially creating sensitive files such as ~/.ssh/authorized_keys on the host system.
References
- github.com/janhq/jan/security/advisories/GHSA-7j4g-mj5j-p842 (opens in a new tab)
- github.com/janhq/jan/pull/9424 (opens in a new tab)
- github.com/janhq/jan/commit/840c33e65182ba9975d32f710c5d111e25444b65 (opens in a new tab)
- github.com/janhq/jan/releases/tag/v0.8.8 (opens in a new tab)
- vulncheck.com/advisories/jan-0.8.5-before-0.8.8-workspace-guard-bypass-via-dangling-symlink (opens in a new tab)