Is CVE-2026-111620 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-111620 being exploited in the wild.

How severe is CVE-2026-111620?

Medium severity, with a CVSS score of 5.3, published 16 October 2026.

Is there a fix for CVE-2026-111620?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-111620 attacked?

It is attacked over the network.

Am I affected by CVE-2026-111620?

Check whether you run O2OA at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-111620: O2OA authorization bypass in attachment download

CVE-2026-111620 · Severity: medium · CVSS 5.3 · Published 2026-10-16

O2OA is an open-source enterprise content and process management system used for collaborative workflow and document handling. The vulnerability allows authenticated users to bypass authorization checks and download confidential attachments belonging to other users' work processes by guessing or knowing attachment identifiers. An attacker with legitimate system access can read sensitive business documents, contracts, or communications that should be restricted to specific team members or departments.

Technologies: O2OA. Vendors: O2OA.

Quick answers

Is CVE-2026-111620 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-111620 being exploited in the wild.
How severe is CVE-2026-111620?: Medium severity, with a CVSS score of 5.3, published 16 October 2026.
Which products and versions are affected?: O2OA through 10.0.2-ce.
Is there a fix for CVE-2026-111620?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-111620 attacked?: It is attacked over the network.
Am I affected by CVE-2026-111620?: Check whether you run O2OA at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An authorization bypass vulnerability exists in the x_processplatform_assemble_surface component, specifically in the ActionDownloadWithWork and ActionDownloadWithWorkStream classes. The attachment download endpoints (/jaxrs/attachment/download/{id}/work/{workId}) fail to verify that a requested attachment UUID actually belongs to the referenced work or draft, allowing any authenticated user to retrieve attachments from accessible works or owned drafts by directly referencing the attachment identifier.

Affected products

O2OA O2OA through 10.0.2-ce

Timeline

2026-10-16: disclosed

References

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