CVE-2026-83186Network attack vector

Authenticated data manipulation via undisclosed HTTP flaw

Published Sep 15, 2026 · Updated Sep 15, 2026

An undisclosed flaw in Oracle Common Applications Calendar 12.2.3 through 12.2.15 allows remote authenticated users to alter critical data. Oracle has not published the faulty code path or the operation it performs on untrusted HTTP input. Low-privileged accounts with network access can create, delete, or modify calendar data and partially interrupt the service.

CVSS severity7.1
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An undisclosed flaw in Oracle Common Applications Calendar 12.2.3 through 12.2.15 allows remote authenticated users to alter critical data. Oracle has not published the faulty code path or the operation it performs on untrusted HTTP input. Low-privileged accounts with network access can create, delete, or modify calendar data and partially interrupt the service.

The record

CVE
CVE-2026-83186
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Oracle Corporation
Product
Oracle Common Applications Calendar
Classifications
T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.2.3 <=12.2.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle Corporation · Oracle Common Applications Calendarversion=12.2.3 <=12.2.15

Published CVSS scores

7.1Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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