# CVE-2015-20122: Seeyon A6 OA Unauthenticated SQL Injection via downloadAtt.jsp

> Remote attackers can extract arbitrary database contents, including credentials, via unauthenticated SQL injection in the attachment download endpoint.

- **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:** 29 Sep 2026
- **Updated:** 29 Sep 2026
- **Also known as:** GHSA-jp76-j5hr-562v

## What is CVE-2015-20122?

CVE-2015-20122 is a high-severity SQL injection vulnerability in Yonyou A6 OA, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Seeyon A6 collaborative office automation platform contains an unauthenticated SQL injection vulnerability in the attach_ids parameter of the file attachment download endpoint that allows remote attackers to extract arbitrary database contents without prior authentication. Attackers can inject UNION-based SQL statements through the attach_ids request parameter in downloadAtt.jsp to retrieve sensitive information including credentials and system configuration data. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-17.

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

## Which versions are affected by CVE-2015-20122?


## How do I fix CVE-2015-20122?

No fix has been published for CVE-2015-20122 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-20122 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2015-20122 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-20122 and fix it if it is affected.

What it is: CVE-2015-20122 is a high-severity SQL injection vulnerability in Yonyou A6 OA, published on 29 Sep 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-2015-20122 exists.

Affected product: Yonyou A6 OA. 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-2015-20122/ (Markdown: https://insights.sbomify.com/CVE-2015-20122/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-20122
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-20122
- OSV: https://osv.dev/vulnerability/CVE-2015-20122

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From sbomify Insights: https://insights.sbomify.com/CVE-2015-20122/
Summaries are generated and may contain mistakes; the official description above is the record.