CVE-2026-34315Network attack vector

Unauthenticated modification of critical application data

Published Apr 21, 2026 · Updated Apr 21, 2026

Improper authorization in Oracle WebLogic Server Web Services allows remote attackers to modify critical data through HTTP requests. Oracle has not disclosed which Web Services authorization check or HTTP input is mishandled, so the code-level mechanism is not public. Affected releases are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0; exploitation requires no authentication but does require interaction by another person.

CVSS severity6.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Oracle WebLogic Server Web Services allows remote attackers to modify critical data through HTTP requests. Oracle has not disclosed which Web Services authorization check or HTTP input is mishandled, so the code-level mechanism is not public. Affected releases are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0; exploitation requires no authentication but does require interaction by another person.

The record

CVE
CVE-2026-34315
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
Oracle
Product
Oracle WebLogic Server
Classifications
CWE-601, CWE-285
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 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=12.2.1.4.0
  2. Affected versionversion=14.1.1.0.0
  3. Affected versionversion=14.1.2.0.0
  4. Affected versionversion=15.1.1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle WebLogic Serverversion=12.2.1.4.0; version=14.1.1.0.0; version=14.1.2.0.0; version=15.1.1.0.0

Published CVSS scores

6.5OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
CWE-285Improper Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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