# CVE-2016-20097: Weaver E-cology 8.0 SQL Injection File Read via SignatureDownLoad

> Unauthenticated attackers can exploit SQL injection in the SignatureDownLoad servlet to read arbitrary files, including sensitive configuration data.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 27 Oct 2026
- **Also known as:** GHSA-8r52-43hm-h433

## What is CVE-2016-20097?

CVE-2016-20097 is a high-severity SQL injection vulnerability in Weaver Network Co., Ltd. E-cology 8.0, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Weaver (Fanwei) E-cology 8.0 contains a SQL injection vulnerability in the SignatureDownLoad servlet that allows unauthenticated remote attackers to read arbitrary files by injecting a UNION SELECT payload into the markId GET parameter, which is concatenated unsanitized into a SQL query. Attackers can control the markPath value returned by the query to supply an attacker-controlled filesystem path, causing the servlet to read and stream back arbitrary files accessible to the application server process, including sensitive configuration files containing database credentials. Disclosure materials indicate that this vulnerability has been remediated, but it's unclear which version resolved the issue. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18 (UTC).

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2016-20097?


## How do I fix CVE-2016-20097?

No fix has been published for CVE-2016-20097 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-20097 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20097 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-20097 and fix it if it is affected.

What it is: CVE-2016-20097 is a high-severity SQL injection vulnerability in Weaver Network Co., Ltd. E-cology 8.0, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20097 exists.

Affected product: Weaver Network Co., Ltd. E-cology 8.0. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2016-20097/ (Markdown: https://insights.sbomify.com/CVE-2016-20097/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-20097
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-20097
- OSV: https://osv.dev/vulnerability/CVE-2016-20097

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-20097/
Summaries are generated and may contain mistakes; the official description above is the record.