How severe is CVE-2016-8736?

CVE-2016-8736 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2016-8736?

CVE-2016-8736 affects the following packages: org.apache.openmeetings:openmeetings-parent (Maven). Ecosystems affected: Maven.

How do I fix CVE-2016-8736?

Update org.apache.openmeetings:openmeetings-parent to 3.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-8736 is resolved across your whole dependency graph.

How do I detect CVE-2016-8736 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.openmeetings:openmeetings-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2016-8736 if there is no patch (or I can't update yet)?

Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Is CVE-2016-8736 actively exploited in the wild?

No public exploit code has been indexed for CVE-2016-8736 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2016-8736?

CVE-2016-8736 has an EPSS (Exploit Prediction Scoring System) score of 4.8%, placing it in the 92th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2016-8736?

CVE-2016-8736 is classified as Deserialization of Untrusted Data (CWE-502). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2016-8736 published, and has it been updated?

CVE-2016-8736 was published on October 12, 2017 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

CRITICAL severity

CVE-2016-8736 — openmeetings-parent

CRITICAL

CVE-2016-8736 is a critical-severity (CVSS 9.8) Deserialization of Untrusted Data vulnerability in org.apache.openmeetings:openmeetings-parent. A fix is available for org.apache.openmeetings:openmeetings-parent — see the affected versions and patch details below.

Apache OpenMeetings RCE

Also known asGHSA-6cpg-3w7f-j67q

Published

Oct 12, 2017

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

4.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs92th percentile — riskier than 92% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.apache.openmeetings:openmeetings-parent

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Apache OpenMeetings before 3.1.2 is vulnerable to Remote Code Execution via RMI deserialization attack.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.openmeetings:openmeetings-parent`	all versions	3.1.2`org.apache.openmeetings:openmeetings-parent:3.1.2`

Affected Products

1 product · 1 configurations

Application

openmeetingsapache

< 3.1.2

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.openmeetings:openmeetings-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.openmeetings:openmeetings-parent to 3.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-8736 is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

Apache OpenMeetings before 3.1.2 is vulnerable to Remote Code Execution via RMI deserialization attack.

O3 Security · Impact-Aware SCA

Is CVE-2016-8736 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

9.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-502Deserialization of Untrusted Data

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

OpenSSF Scorecard

Package health score

openmeetings

4.8/10

Maintained10/10

Code-Review0/10

Branch-Protection3/10

Assessed Oct 26, 2026

Timeline

Disclosed

Oct 12, 2017

Last updated

Oct 24, 2026

Identifiers

CVE-2016-8736

GHSA-6cpg-3w7f-j67q

References

Advisoryopenmeetings.markmail.org · tr47byaaopnemvne Advisorysecurityfocus.com Advisorynvd.nist.gov · CVE 2016 8736 Webweb.archive.org Webweb.archive.org · tr47byaaopnemvne Packagegithub.com · openmeetings

Related vulnerabilities

This CVE is critical severity; 2 of 8 other CVEs affecting openmeetings-parent are rated as high or higher (top: critical).

CVE-2026-33005CVE-2026-34020CVE-2026-33266CVE-2024-54676CVE-2023-29246CVE-2023-29032CVE-2023-28326CVE-2017-7681

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2016-8736 — openmeetings-parent

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2016-8736 in your dependencies?