n8n before 2.41.4 and 2.42.1 Prototype Pollution DoS via Workflow History Compaction
- Published
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Fix
- Fixed in 2.41.4, 2.42.1
- 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
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
n8n, a workflow automation platform, is affected by this vulnerability. A low-privileged user who saves a workflow with specially named connection keys can cause the server's periodic history compaction task to fail, which leads to login and write failures with server errors (a denial of service).
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
n8n before 2.41.4 and 2.42.x before 2.42.1 contains a prototype pollution vulnerability that allows low-privileged users to alter built-in object behaviour by saving workflows with specially named connection keys. Attackers can add keys such as proto to workflow connections, which the periodic history compaction task processes, causing logins and writes to fail with server errors.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- n8n-io n8n
fixed in 2.41.4
- n8n-io n8n
From 2.42.0 · fixed in 2.42.1