CVE-2020-37278 (GCVE-0-2020-37278)
Vulnerability from cvelistv5 – Published: 2026-10-02 18:38 – Updated: 2026-10-02 20:14 X_Known Exploited VulnerabilityTitle
Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFile
Summary
Weaver e-Bridge contains an unauthenticated arbitrary file read vulnerability that allows remote attackers to access arbitrary files on the host system by supplying a file: URL to the downloadUrl parameter of the saveYZJFile endpoint. Attackers can exploit this flaw to read sensitive files such as /etc/passwd or configuration and credential files, and the same endpoint's support for http(s) URLs also enables server-side request forgery against internal network resources. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-17.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 20:14 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/projectdiscovery/nuclei-templa… | technical-description |
| https://www.weaver.com.cn/cs/ebridge_full_log_en.html | release-notes |
| https://www.vulncheck.com/advisories/weaver-e-bri… | third-party-advisory |
Impacted products
Date Public
2020-09-12 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 66a93d1e-50cd-4a1b-bf24-6174560d87d4
Exploited: Yes
Timestamps
First Seen: 2026-10-02
Asserted: 2026-10-02
Scope
Notes: Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFile | Affected: Weaver / e-Bridge | CVSS: 8.7 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFile |
| Cve Id | CVE-2020-37278 |
| Vendor | Weaver |
| Ghsa Id | GHSA-JH67-5HQG-R8P4 |
| Product | e-Bridge |
| Added Date | 2026-10-02T19:00:53.874Z |
| Cvss Score | 8.7 |
| Epss Score | None |
| Previous Ids | |
| Cvss Severity | HIGH |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | None |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2020-37278 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-10-03 20:00 UTC
| Updated: 2026-10-03 20:00 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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