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

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.