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Vulnerabilities

Vulnerability · CVE-2021-48013

Weaver e-cology Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Published Oct 22, 2026 · catalog updated Oct 22, 2026 · Weaver Network Co., Ltd. E-cology

Patch now

CVE-2021-48013 is in the CISA known-exploited catalog. Confirm Weaver Network Co., Ltd. E-cology against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.7
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.74%
Remediation
Remediation guidance
Affected products
vendor Weaver Network Co., Ltd. E-cology

Weaver E-cology 8.0 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files through the fpath parameter of the /weaver/ln.FileDownload endpoint. Attackers can send crafted GET requests with directory traversal sequences in fpath to retrieve sensitive files such as WEB-INF/web.xml from the server. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Weaver Network Co., Ltd. E-cologyversion unspecified

How to fix CVE-2021-48013

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-48013 is in the CISA known-exploited catalog. Confirm Weaver Network Co., Ltd. E-cology against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.74%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 22, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  2. Oct 22, 2026 · NIST NVD

    Detected

    Weaver E-cology 8.0 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files through the fpath parameter of the /weaver/ln.FileDownload endpoint. Attackers can send crafted GET requests with directory traversal sequences in fpath to retrieve sensitive files such as WEB-INF/web.xml from the server. Exploitation evidence was first observed by the Shadowse

Sources

  • CVE.orgVulnerability recordCVE-2021-48013

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-48013

    30-day exploitation probability 0.74%

    first.org
  • NIST NVDVulnerability recordCVE-2021-48013

    Weaver E-cology 8.0 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files through the fpath parameter of the /weaver/ln.FileDownload endpoint. Attackers can send crafted GET requests with directory traversal sequences in fpath to re

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2021-48013

    Weaver E-cology 8.0 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files through the fpath parameter of the /weaver/ln.FileDownload endpoint. Attackers can send crafted GET requests with directory traversal sequences in fpath to re

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.