SQL Injection in Yonyou A6 Oa
CVE-2015-20122
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.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- qkl.seebug.org/vuldb/ssvid-89642 (third-party-advisory)
- www.ddpoc.com/poc/DVB-2021-2211.html (third-party-advisory)
- www.vulncheck.com/advisories/seeyon-a6-oa-unauthenticated-sql-injection-via-dow… (third-party-advisory)
Frequently asked questions
- What is CVE-2015-20122?
- CVE-2015-20122 is a high-severity vulnerability in Yonyou A6 Oa, classified under SQL Injection. CVSS score: 7.5/10. Published 2026-09-29.
- How severe is CVE-2015-20122?
- High severity. CVSS v3 base score is 7.5 out of 10.