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No exploitation reportedAwaiting NVD analysis

CVE-2026-18800

Information Disclosure via Event Publisher Logging in Multiple WSO2 Products Allows Retrieval of Sensitive Data

No exploitation reported by the sources we read.

  • Published2026-11-02
  • WeaknessCWE-532

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

When an Event Publisher output adapter is configured with properties that are irrelevant to its function, the affected products log these irrelevant properties. This can inadvertently include sensitive user credentials or other confidential information depending on the nature of the misconfigured property. A malicious actor with access to the 'wso2carbon' log files could retrieve sensitive information logged by the system. This may potentially lead to unauthorized access if the logged data contains credentials or other critical secrets.

Timeline

dates in UTC
  1. 2026-11-0209:59CVE publishedCNA

Observed activity

isMalicious corpus · updated 2026-11-02 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-18800?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-18800?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

Products declared by the CNA

As WSO2, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • WSO2 API Managerother versions: not affected
    Affected
    • ≥ 3.1.0, < 3.1.0.357fixed in 3.1.0.357custom
    • ≥ 3.2.0, < 3.2.0.465fixed in 3.2.0.465custom
    • ≥ 3.2.1, < 3.2.1.84fixed in 3.2.1.84custom
    • ≥ 4.1.0, < 4.1.0.249fixed in 4.1.0.249custom
    • ≥ 4.2.0, < 4.2.0.189fixed in 4.2.0.189custom
    • ≥ 4.3.0, < 4.3.0.100fixed in 4.3.0.100custom
    • ≥ 4.4.0, < 4.4.0.64fixed in 4.4.0.64custom
    • ≥ 4.5.0, < 4.5.0.49fixed in 4.5.0.49custom

    2 more version lines in the CVE record.

  • WSO2 Traffic Managerother versions: not affected
    Affected
    • ≥ 4.5.0, < 4.5.0.48fixed in 4.5.0.48custom
    • ≥ 4.6.0, < 4.6.0.13fixed in 4.6.0.13custom

    Not affected < 4.5.0 (status unknown)

  • WSO2 API Control Planeother versions: not affected
    Affected
    • ≥ 4.5.0, < 4.5.0.50fixed in 4.5.0.50custom
    • ≥ 4.6.0, < 4.6.0.14fixed in 4.6.0.14custom

    Not affected < 4.5.0 (status unknown)

  • WSO2 Universal Gatewayother versions: not affected
    Affected
    • ≥ 4.5.0, < 4.5.0.49fixed in 4.5.0.49custom
    • ≥ 4.6.0, < 4.6.0.13fixed in 4.6.0.13custom

    Not affected < 4.5.0 (status unknown)

  • WSO2 Identity Serverother versions: not affected
    Affected
    • ≥ 5.10.0, < 5.10.0.386fixed in 5.10.0.386custom
    • ≥ 5.11.0, < 5.11.0.433fixed in 5.11.0.433custom
    • ≥ 6.0.0, < 6.0.0.260fixed in 6.0.0.260custom
    • ≥ 6.1.0, < 6.1.0.261fixed in 6.1.0.261custom
    • ≥ 7.0.0, < 7.0.0.139fixed in 7.0.0.139custom
    • ≥ 7.1.0, < 7.1.0.47fixed in 7.1.0.47custom
    • ≥ 7.2.0, < 7.2.0.8fixed in 7.2.0.8custom

    Not affected < 5.10.0 (status unknown)

  • WSO2 Identity Server as Key Managerother versions: not affected
    Affected
    • ≥ 5.10.0, < 5.10.0.377fixed in 5.10.0.377custom

    Not affected < 5.10.0 (status unknown)

3 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-02

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-18800 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-11-02
  • CNACVSS 3.14.42026-11-02
  • CNAweakness (CWE)CWE-5322026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Published
2026-11-02
Last Modified
2026-11-02
NVD status
Received

Frequently asked questions

What is CVE-2026-18800?

When an Event Publisher output adapter is configured with properties that are irrelevant to its function, the affected products log these irrelevant properties. This can inadvertently include sensitive user credentials or other confidential information depending on the nature of the misconfigured property. A malicious actor with access to the 'wso2carbon' log files could retrieve sensitive information logged by the system. This may potentially lead to unauthorized access if the logged data contains credentials or other critical secrets.

Is CVE-2026-18800 actively exploited?

Active exploitation of CVE-2026-18800 has not been confirmed.

What is the CVSS score for CVE-2026-18800?

CVE-2026-18800 has a CVSS v3 base score of 4.4 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record