PatchTheCVECVE-2026-5430: WSO2 Multiple Products Path Traversal Vulnerability
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CRITICAL 10.0EXPLOITEDREMOTEUPGRADEUPGRADEUPGRADE
CVE-2026-5430 is a critical-severity flaw (CVSS 10.0) affecting api control plane, api manager, traffic manager, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported algorithm, which is then incorrectly validated, leading to unauthorized access. Successful exploitation of this vulnerability may result in unauthorized access to the system, including the potential compromise of administrative accounts and full account takeover. Th
Why this priority
- Critical severity
- Exploited in the wild (CISA KEV)
- 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 | 0.6% (top 53%) |
| CISA exploited list | Yes, fix due 2026-09-27 |
| Weakness | CWE-347 |
| Published | 2026-08-06 |
| Last modified | 2026-09-25 |
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
wso2 api control plane UPGRADE
Affected: >= 4.5.0 and < 4.5.0.58 · >= 4.6.0 and < 4.6.0.22
Fixed in: 4.5.0.58, 4.6.0.22
Safe to downgrade to: a release before 4.5.0
1. Check installed version
apt-cache policy api-control-plane || rpm -q api-control-plane || api-control-plane --version
2. UPGRADE to 4.5.0.58 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade api-control-plane
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade api-control-plane
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 4.5.0 (Debian / Ubuntu)
apt-cache madison api-control-plane
sudo apt install api-control-plane=<VERSION_BEFORE_4.5.0>
sudo apt-mark hold api-control-plane
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list api-control-plane
sudo dnf downgrade api-control-plane-<VERSION_BEFORE_4.5.0>
sudo dnf versionlock add api-control-plane
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.
wso2 api manager UPGRADE
Affected: >= 4.1.0 and < 4.1.0.257 · >= 4.2.0 and < 4.2.0.197 · >= 4.3.0 and < 4.3.0.108 · >= 4.4.0 and < 4.4.0.72 · >= 4.5.0 and < 4.5.0.57 · >= 4.6.0 and < 4.6.0.21
Fixed in: 4.1.0.257, 4.2.0.197, 4.3.0.108, 4.4.0.72, 4.5.0.57, 4.6.0.21
Safe to downgrade to: a release before 4.1.0
1. Check installed version
apt-cache policy api-manager || rpm -q api-manager || api-manager --version
2. UPGRADE to 4.1.0.257 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade api-manager
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade api-manager
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 4.1.0 (Debian / Ubuntu)
apt-cache madison api-manager
sudo apt install api-manager=<VERSION_BEFORE_4.1.0>
sudo apt-mark hold api-manager
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list api-manager
sudo dnf downgrade api-manager-<VERSION_BEFORE_4.1.0>
sudo dnf versionlock add api-manager
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.
wso2 traffic manager UPGRADE
Affected: >= 4.5.0 and < 4.5.0.56 · >= 4.6.0 and < 4.6.0.21
Fixed in: 4.5.0.56, 4.6.0.21
Safe to downgrade to: a release before 4.5.0
1. Check installed version
apt-cache policy traffic-manager || rpm -q traffic-manager || traffic-manager --version
2. UPGRADE to 4.5.0.56 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade traffic-manager
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade traffic-manager
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 4.5.0 (Debian / Ubuntu)
apt-cache madison traffic-manager
sudo apt install traffic-manager=<VERSION_BEFORE_4.5.0>
sudo apt-mark hold traffic-manager
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list traffic-manager
sudo dnf downgrade traffic-manager-<VERSION_BEFORE_4.5.0>
sudo dnf versionlock add traffic-manager
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.
wso2 universal gateway UPGRADE
Affected: >= 4.5.0 and < 4.5.0.57 · >= 4.6.0 and < 4.6.0.21
Fixed in: 4.5.0.57, 4.6.0.21
Safe to downgrade to: a release before 4.5.0
1. Check installed version
apt-cache policy universal-gateway || rpm -q universal-gateway || universal-gateway --version
2. UPGRADE to 4.5.0.57 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade universal-gateway
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade universal-gateway
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 4.5.0 (Debian / Ubuntu)
apt-cache madison universal-gateway
sudo apt install universal-gateway=<VERSION_BEFORE_4.5.0>
sudo apt-mark hold universal-gateway
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list universal-gateway
sudo dnf downgrade universal-gateway-<VERSION_BEFORE_4.5.0>
sudo dnf versionlock add universal-gateway
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
Fedora 46 · retext · FIXED · 8.1.0-1.fc46 · FEDORA-2026-0602a84203 · source
sudo dnf upgrade --advisory=FEDORA-2026-0602a84203
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: abraxas/CVE-2026-5430 (2 stars)
- GitHub PoC: davidvrns/CVE-2026-5430-WSO2 (1 stars)
- GitHub PoC: HORKimhab/CVE-2026-5430 (0 stars)
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.