Path Traversal in Halo
CVE-2020-21526
An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.019 (77.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Halo — versions 1.1.3
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2020-21526?
- CVE-2020-21526 is a critical-severity vulnerability in Halo, classified under Path Traversal. CVSS score: 9.8/10. Published 2020-09-30.
- How severe is CVE-2020-21526?
- Critical severity. CVSS v3 base score is 9.8 out of 10.