Seeyon A6 OA Unauthenticated SQL Injection via downloadAtt.jsp

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

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.

Source published

29 Sep 2026 14:58:49 UTC

Source modified

29 Sep 2026 16:07:01 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

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CVSS 4.0 · 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

CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N