PatchTheCVECVE-2021-42556: Rasa X before 0.42.4 allows Directory Traversal during archive extraction
CVE-2021-42556 is a medium-severity flaw (CVSS 5.5) affecting rasa x. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Rasa X before 0.42.4 allows Directory Traversal during archive extraction. In the functionality that allows a user to load a trained model archive, an attacker has arbitrary write capability within specific directories via a crafted archive file.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.0% (top 38%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2021-10-22 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-42556?
rasa x: upgrade to 0.42.4. Exact commands for each OS are on this page.
Is CVE-2021-42556 being exploited?
CVE-2021-42556 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-42556 affect?
CVE-2021-42556 affects rasa x. Severity is medium (CVSS 5.5). Rasa X before 0.42.4 allows Directory Traversal during archive extraction. In the functionality that allows a user to load a trained model archive, an attacker has arbitrary write capability within specific directories via a crafted archive
How urgent is CVE-2021-42556?
Priority 35/100. No elevated risk signals yet.