`CVE-2026-21962`

10.0 Critical Not applicable

Description

Vulnerability in the Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in. While the vulnerability is in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data. Note: Affected version for Weblogic Server Proxy Plug-in for IIS is 12.2.1.4.0 only. CVSS 3.1 Base Score 10.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N).

CWE-284 · Improper access control

Exploitation Status

Exploited in the wild

Confirmed real-world exploitation.

CVSS E:A

CISA KEV listed Confirmed exploitation in the wild. Added 2026-08-24 · remediation due 2026-08-27 · ransomware use: unknown
CISA Vulnrichment exploitation: active CISA records active exploitation. Automatable: yes, technical impact: total.
Indexed PoC 10 indexed Published artifacts you can open, in GitHub PoC; first seen 2026-01-22.
EPSS 42% chance in 30 days A model prediction, not an observation. Higher than 99% of all scored CVEs.

8 of these are GitHub repositories below the 5★ evidence bar. They are listed because a person may still want to open one; they do not count toward the exploit maturity above.

Index	Artifact	Stars	First seen
GitHub PoC	CVE-2026-21962	6	2026-01-22
GitHub PoC	Unauthenticated vulnerability that may allow remote attackers to compromise confidentiality and integrity, potentially leading to full system compromise.	6	2026-01-22
GitHub PoC	gregk4sec/cve-2026-21962	4	2026-03-08
GitHub PoC	zeetee1235/CVE-2026-21962	3	2026-08-27
GitHub PoC	Oracle Fusion Middleware Oracle HTTP Server / WebLogic Server Proxy Plug-in has an easily exploitable, unauthenticated, network-reachable flaw allowing compromise over HTTP. Affected supported versions include 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0.	3	2026-02-09
GitHub PoC	CVE-2026-21962 Açığı için blog sayfası oluşturdum.	2	2026-08-29
GitHub PoC	naozibuhao/CVE-2026-21962_Java_GUI_Exploit_Tool	2	2026-03-21
GitHub PoC	CVE-2026-21962-EXP	2	2026-01-26
GitHub PoC	CVE-2026-21962	1	2026-04-24
GitHub PoC	CVE Finder		2026-02-03

Waratek Defense Posture

Not applicable

Not a Java vulnerability. Outside ARMR's domain entirely.

Protection none
Action not-needed none
Review automated inferred
Record active

Decided by oracle-component : The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the native WebLogic proxy plug-in. Oracle gives these no CPE of their own and names them only in the description.

Finding This CVE is in the WebLogic Server Proxy Plug-in (Weblogic Server Proxy Plug-in for Apache HTTP Server), the native module Oracle ships for Apache HTTP Server, Oracle HTTP Server and IIS to forward requests to WebLogic. The plug-in is C code running inside a web server, not Java running in a JVM, so there is no bytecode for ARMR to instrument. Oracle files these CVEs under the WebLogic and HTTP Server CPE products, which is why CPE data alone reads them as in scope.

Decided by	`oracle-component` : The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the native WebLogic proxy plug-in. Oracle gives these no CPE of their own and names them only in the description.
Finding	This CVE is in the WebLogic Server Proxy Plug-in (Weblogic Server Proxy Plug-in for Apache HTTP Server), the native module Oracle ships for Apache HTTP Server, Oracle HTTP Server and IIS to forward requests to WebLogic. The plug-in is C code running inside a web server, not Java running in a JVM, so there is no bytecode for ARMR to instrument. Oracle files these CVEs under the WebLogic and HTTP Server CPE products, which is why CPE data alone reads them as in scope.

CVSS

10.0 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N 1 metric

VRT selects the newest version's highest entry and publishes it as cvssScore, newest rather than largest because scores are not comparable across versions, and highest rather than first because the first entry is frequently a CNA placeholder scoring 0.0 over NVD's own analysis.

Version Score Band Vector Assigner Type

CVSS 3.1 10.0 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N secalert_us@oracle.com Secondary published

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	10.0	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N`	secalert_us@oracle.com	Secondary	published

Affected Software & Releases

🏛️ Oracle CPU Advisories & Products

Advisory	Type	Quarter	Products Oracle named in risk matrix
Oracle Critical Patch Update January 2026 ↗	CPU	2026-Q1	Oracle Fusion Middleware / Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0)

Advisory

Type

Quarter

Products Oracle named in risk matrix

Oracle Critical Patch Update January 2026 ↗

CPU

2026-Q1

Oracle Fusion Middleware / Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0)

Indexed Oracle Components & Versions

Family	Component	Oracle's version cell (verbatim)	Indexed as
Oracle Fusion Middleware	Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS	12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0	12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0

Family

Component

Oracle's version cell (verbatim)

Indexed as

Oracle Fusion Middleware

Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS

12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0

12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0

🖥️ Product CPEs & Version Ranges

2 product(s) over 6 version claims (uncapped)

Source	Vendor	Product	Scheme	Affected Versions
nvd	oracle	http server	generic	12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0
nvd	oracle	weblogic server proxy plug-in	generic	12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0

Source

Vendor

Product

Scheme

Affected Versions

nvd

oracle

http server

generic

12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0

nvd

oracle

weblogic server proxy plug-in

generic

12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0

References

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html
https://github.com/Ashwesker/Ashwesker-CVE-2026-21962/issues/1	Broken Link, Not Applicable
https://web.archive.org/web/20260129165916/https://github.com/Ashwesker/Ashwesker-CVE-2026-21962/issues/1	Issue Tracking
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21962	US Government Resource
https://x.com/0xacb/status/2015473216844620280	Not Applicable

URL

Timeline

Published 2026-01-20 Last modified 2026-08-25

Published	2026-01-20	By the CVE Program.
NVD record modified	2026-08-25	NVD's own last-modified date for this record.

Published

2026-01-20

By the CVE Program.

NVD record modified

2026-08-25

NVD's own last-modified date for this record.

Pipeline policy audit (7 of 21 rules evaluated)

7 of 21 rules ran. The rest were never reached, because an earlier stage settled the CVE, a distinct claim from a rule that ran and found nothing.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? first match wins

1 rejected no-match CVE Program withdrawal of this identifier

scope: Is the vulnerability ARMR's to address? first match wins

2 armr-patch-file no-match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no-match An ARMR security-rule template on disk for this CVE

4 manual-classification no-match A researcher's recorded decision for this specific CVE

5 manual classification no-match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no-match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component decided it matched Not applicable Description names the "Weblogic Server Proxy Plug-in for Apache HTTP Server" component

8 osv-maven not-reached An OSV.dev record of this CVE affecting a package published to Maven Central

9 cna-maven-package not-reached An affected Maven artifact named by the CNA itself

10 known-cpe-product not-reached An NVD CPE naming a product ARMR tracks

11 cna-cpe-product not-reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

12 oracle-advisory-family not-reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

13 non-deployable-product not-reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

14 unmatched-product not-reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? cumulative: every rule gets a turn

15 patch-hint not-reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

16 open-source-maven not-reached The affected package being open source on Maven, so the fix can be read

17 poc-derivable not-reached An indexed exploit to reverse-engineer, where there is no source to read

18 no-exploit not-reached With no fix path, a public exploit, or a CISA record of one

19 secure-rule-match not-reached A vulnerability class already blocked by an ARMR security rule

20 below-action-threshold not-reached Medium or Low severity, no KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

21 no-exploit-published not-reached A published working exploit for this candidate, not only a proof of concept, a forecast, or nothing at all

Raw stored JSON document for this CVE ↗ · NVD ↗ · CVE.org ↗