Path Traversal in Os4ed Opensis
CVE-2021-27341
OpenSIS Community Edition version <= 7.6 is affected by a local file inclusion vulnerability in DownloadWindow.php via the "filename" parameter.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.021 (79.1th 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
- Os4ed Opensis
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-27341?
- CVE-2021-27341 is a critical-severity vulnerability in Os4ed Opensis, classified under Path Traversal. CVSS score: 9.8/10. Published 2021-09-16.
- How severe is CVE-2021-27341?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-27341 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.