CVE-2021-42556
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-42556- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-42556- Updated
- 2026-11-02
EUVDEUVD-2021-29524 No score
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.
- Record
EUVD-2021-29524- Updated
- 2026-11-03
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | lierbushiwo/Rasa-cve-exp | 2026-06-03 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42556 is a medium vulnerability (CVSS 5.5) in Rasa X, published October 22, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.96%, the 61st percentile. No source names a fixed version.