What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-30
• Weakness: CWE-89

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.

Affected products

• Yonyou A6 OA: all versions

References

• https://qkl.seebug.org/vuldb/ssvid-89642
• https://www.ddpoc.com/poc/DVB-2021-2211.html
• https://www.vulncheck.com/advisories/seeyon-a6-oa-unauthenticated-sql-injection-via-downloadatt-jsp
• https://www.ddpoc.com/poc/DVB-2021-2211.html

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