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TI-2021-22764 Aliases CVE-2021-48013GHSA-ggh3-mmrr-r9c4

Unauthenticated path traversal in Weaver E-cology reads server files

Priority HIGH 77CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

Weaver E-cology from version 8.0 contains a path traversal flaw (CWE-22) in the fpath parameter of the /weaver/ln.FileDownload endpoint. An unauthenticated remote attacker can send crafted GET requests to read arbitrary files, such as WEB-INF/web.xml, from the server. The Shadowserver Foundation first observed exploitation on 2023-10-18, and a public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00736 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Weaver Network Co., Ltd.E-cology8.0—No fix listedCNA

Remediation

The sources list no fixed version for E-cology.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-22 Threatist record created from CVE-2021-48013
  2. 2026-10-22 Alias added: GHSA-ggh3-mmrr-r9c4
  3. 2026-10-23 Priority changed: MEDIUM → LOW
  4. 2026-10-29 CISA SSVC decision points changed
  5. 2026-10-29 Priority changed: LOW → HIGH

References

Exploit 1

Other 1

  • TI-2022-26434 Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet CVSS 4.0CRITICAL 9.3
  • TI-2022-04582 Weaver E-cology 9.0 File Upload RCE via uploaderOperate.jsp CVSS 4.0CRITICAL 9.3
  • TI-2025-43962 Unauthenticated SQL injection in Weaver E-cology CVSS 4.0HIGH 8.8
  • TI-2022-26436 Weaver E-cology 8.0 / 9.0 SQL Injection via HrmCareerApplyPerView.jsp CVSS 4.0HIGH 8.7
  • TI-2019-15817 Weaver E-cology SQL Injection via SyncUserInfo.jsp CVSS 4.0HIGH 8.7
  • TI-2016-09273 Weaver E-cology 8.0 SQL Injection File Read via SignatureDownLoad CVSS 4.0HIGH 8.7
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences