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CVE-2025-1862: An arbitrary file upload vulnerability exists in multiple WSO2 products due to improper validation of user-sup

35
Routine
MEDIUM 6.7DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2025-1862 is a medium-severity flaw (CVSS 6.7) affecting enterprise integrator, identity server, identity server as key manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An arbitrary file upload vulnerability exists in multiple WSO2 products due to improper validation of user-supplied filenames in the BPEL uploader SOAP service endpoint. A malicious actor with administrative privileges can upload arbitrary files to a user-controlled location on the server. By leveraging this vulnerability, an attacker can upload a specially crafted payload and achieve remote code execution (RCE), potentially compromising the se

Why this priority

  • No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score6.7 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance0.5% (top 55%)
CISA exploited listNo
WeaknessCWE-434
Published2025-09-26
Last modified2026-10-18
Publisher (CNA): WSO2 LLC · Vendor: wso2

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Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

wso2 enterprise integrator DOWNGRADE
Affected: 6.6.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.6.0
1. Check installed version
apt-cache policy enterprise-integrator || rpm -q enterprise-integrator || enterprise-integrator --version
2. No fixed release: DOWNGRADE to a release before 6.6.0 (Debian / Ubuntu)
apt-cache madison enterprise-integrator sudo apt install enterprise-integrator=<VERSION_BEFORE_6.6.0> sudo apt-mark hold enterprise-integrator
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list enterprise-integrator sudo dnf downgrade enterprise-integrator-<VERSION_BEFORE_6.6.0> sudo dnf versionlock add enterprise-integrator
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 identity server DOWNGRADE
Affected: 5.10.0 · 5.11.0 · 6.0.0 · 6.1.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.10.0
1. Check installed version
apt-cache policy identity-server || rpm -q identity-server || identity-server --version
2. No fixed release: DOWNGRADE to a release before 5.10.0 (Debian / Ubuntu)
apt-cache madison identity-server sudo apt install identity-server=<VERSION_BEFORE_5.10.0> sudo apt-mark hold identity-server
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list identity-server sudo dnf downgrade identity-server-<VERSION_BEFORE_5.10.0> sudo dnf versionlock add identity-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.
wso2 identity server as key manager DOWNGRADE
Affected: 5.10.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.10.0
1. Check installed version
apt-cache policy identity-server-as-key-manager || rpm -q identity-server-as-key-manager || identity-server-as-key-manager --version
2. No fixed release: DOWNGRADE to a release before 5.10.0 (Debian / Ubuntu)
apt-cache madison identity-server-as-key-manager sudo apt install identity-server-as-key-manager=<VERSION_BEFORE_5.10.0> sudo apt-mark hold identity-server-as-key-manager
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list identity-server-as-key-manager sudo dnf downgrade identity-server-as-key-manager-<VERSION_BEFORE_5.10.0> sudo dnf versionlock add identity-server-as-key-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 open banking iam DOWNGRADE
Affected: 2.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.0.0
1. Check installed version
apt-cache policy open-banking-iam || rpm -q open-banking-iam || open-banking-iam --version
2. No fixed release: DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)
apt-cache madison open-banking-iam sudo apt install open-banking-iam=<VERSION_BEFORE_2.0.0> sudo apt-mark hold open-banking-iam
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list open-banking-iam sudo dnf downgrade open-banking-iam-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add open-banking-iam
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.
Verify at the official source NVD · CVE Program · 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.

Quick answers

How do I fix CVE-2025-1862?

enterprise integrator: downgrade or apply the listed mitigation; identity server: downgrade or apply the listed mitigation; identity server as key manager: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-1862 being exploited?

CVE-2025-1862 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-1862 affect?

CVE-2025-1862 affects enterprise integrator, identity server, identity server as key manager. Severity is medium (CVSS 6.7). An arbitrary file upload vulnerability exists in multiple WSO2 products due to improper validation of user-supplied filenames in the BPEL uploader SOAP service endpoint. A malicious actor with administrative privileges can upload arbitrary

How urgent is CVE-2025-1862?

Priority 35/100. No elevated risk signals yet.

Related CVEs

References

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