PatchTheCVECVE-2026-21962: Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability
98
Patch now
CRITICAL 10.0EXPLOITEDREMOTEDOWNGRADEDOWNGRADE
CVE-2026-21962 is a critical-severity flaw (CVSS 10.0) affecting http server, weblogic server proxy plug-in, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 Serv
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- Exploited in the wild (CISA KEV)
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 73.2% (top 1%) |
| CISA exploited list | Yes, fix due 2026-08-27 |
| Weakness | CWE-284 |
| Published | 2026-01-20 |
| Last modified | 2026-08-25 |
Am I affected?
Timeline
- Published CVE record published
- Exploited Added to the CISA Known Exploited Vulnerabilities list
- Updated Record last modified
- Deadline CISA due date for US federal agencies to patch
oracle http server DOWNGRADE
Affected: 12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.2.1.4.0
1. Check installed version
apt-cache policy http-server || rpm -q http-server || http-server --version
2. No fixed release: DOWNGRADE to a release before 12.2.1.4.0 (Debian / Ubuntu)
apt-cache madison http-server
sudo apt install http-server=<VERSION_BEFORE_12.2.1.4.0>
sudo apt-mark hold http-server
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list http-server
sudo dnf downgrade http-server-<VERSION_BEFORE_12.2.1.4.0>
sudo dnf versionlock add http-server
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
oracle weblogic server proxy plug-in DOWNGRADE
Affected: 12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.2.1.4.0
1. Check installed version
apt-cache policy weblogic-server-proxy-plug-in || rpm -q weblogic-server-proxy-plug-in || weblogic-server-proxy-plug-in --version
2. No fixed release: DOWNGRADE to a release before 12.2.1.4.0 (Debian / Ubuntu)
apt-cache madison weblogic-server-proxy-plug-in
sudo apt install weblogic-server-proxy-plug-in=<VERSION_BEFORE_12.2.1.4.0>
sudo apt-mark hold weblogic-server-proxy-plug-in
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list weblogic-server-proxy-plug-in
sudo dnf downgrade weblogic-server-proxy-plug-in-<VERSION_BEFORE_12.2.1.4.0>
sudo dnf versionlock add weblogic-server-proxy-plug-in
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Exact fixes by distribution
A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · uv · FIXED · 0.13.5-1.fc46 · FEDORA-2026-61ea5a28c6 · source
sudo dnf upgrade --advisory=FEDORA-2026-61ea5a28c6
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: samael0x4/CVE-2026-21962 (6 stars)
- GitHub PoC: boroeurnprach/Ashwesker-CVE-2026-21962 (6 stars)
- GitHub PoC: gregk4sec/cve-2026-21962 (4 stars)
- Write-up: x.com/0xacb/status/2015473216844620280
Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.