CVE Intelligence
Medium Cross-site scripting

CVE-2025-6623 — Stored Cross-Site Scripting via XML Input in Multiple WSO2 Products Allows UI Manipulation and Redirection

The carbon console accepts user-supplied XML input without sufficiently encoding potentially executable content, allowing for the injection of malicious scripts. Successful exploitation allows a remote attacker to execute arbitrary JavaScript in the context of a victim's browser, leading to actions such as redirecting the user to a malicious website or modifying the web page's user interface. Session hijacking is not possible as sensitive session cookies are protected by the httpOnly flag.

Published Oct 19, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: WSO2

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
—
No EPSS score.
Affects
WSO2
Api Control Plane and 5 more
CVSS base
4.3
Medium · 2 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (WSO2 Api Control Plane, WSO2 Api Manager, WSO2 Traffic Manager…).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Exploitation requires user interaction: tighten email/web filtering and warn affected users.
  4. Search available logs for exploit probes matching the vulnerability class (cross-site scripting), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
WSO2 Api Control Plane ≥ 4.5.0 and < 4.5.0.12 Vulnerable CVE Program (cve.org) e CISA ADP
WSO2 Api Manager ≥ 3.2.0 and < 3.2.0.433≥ 3.2.1 and < 3.2.1.53≥ 4.1.0 and < 4.1.0.215≥ 4.2.0 and < 4.2.0.153≥ 4.3.0 and < 4.3.0.66≥ 4.4.0 and < 4.4.0.29≥ 4.5.0 and < 4.5.0.11 Vulnerable CVE Program (cve.org) e CISA ADP
WSO2 Traffic Manager ≥ 4.5.0 and < 4.5.0.11 Vulnerable CVE Program (cve.org) e CISA ADP
WSO2 Universal Gateway ≥ 4.5.0 and < 4.5.0.11 Vulnerable CVE Program (cve.org) e CISA ADP
WSO2 WSO2 Carbon Event Publisher UI ≥ 5.2.57 and < 5.2.57.7≥ 5.3.20 and < 5.3.20.1≥ 5.3.15 and < 5.3.15.3≥ 5.3.11 and < 5.3.11.4≥ 5.3.5 and < 5.3.5.4≥ 5.2.41 and < 5.2.41.6≥ 5.2.26 and < 5.2.26.19 Vulnerable CVE Program (cve.org) e CISA ADP
WSO2 WSO2 Carbon Event Receiver UI ≥ 5.2.26 and < 5.2.26.19≥ 5.2.41 and < 5.2.41.6≥ 5.2.57 and < 5.2.57.7≥ 5.3.5 and < 5.3.5.4≥ 5.3.11 and < 5.3.11.4≥ 5.3.15 and < 5.3.15.3≥ 5.3.20 and < 5.3.20.1 Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Adjacent
Attack complexity
Low
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
4.3 CVSS 3.1 Medium 1.2 2.7 ed10eef1-636d-4fbe-9993-6890dfa878f8 via NIST National Vulnerability Database
4.3 CVSS 3.1 Medium — — WSO2 via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N (score shown at the top: ed10eef1-636d-4fbe-9993-6890dfa878f8)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-79 · Cross-site Scripting (XSS)

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Monitor CSP violation reports and script payloads in reflected parameters.
web/proxy/WAF logsapplication logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Source status changed · Received → Awaiting Analysis
    Oct 19, 2026 · NIST National Vulnerability Database
  • Affected products added · wso2/wso2 api manager, wso2/wso2 universal gateway, wso2/wso2 traffic manager, wso2/wso2 api control plane, wso2/wso2 ca
    Oct 19, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 19, 2026
  • CVSS changed · 4.3
    Oct 19, 2026 · NIST National Vulnerability Database
  • Source status changed · → Received
    Oct 19, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 19, 2026 · Alertas do Telegram
  • CVE published
    Oct 19, 2026 · WSO2

Source activity

Repeated readings are counted rather than listed.

  • 1× References added · Oct 19, 2026 – Oct 19, 2026
  • 1× Official description updated · Oct 19, 2026 – Oct 19, 2026

References

2 on the record

Elsewhere on this site

WSO2
every CVE for this vendor
Cross-site scripting
same class
CWE-79
other pages naming this weakness

Related CVEs (same products)

  • CVE-2025-7203 Sensitive Information Disclosure via Management Console and Product Files in Multiple WSO2 Products Allows Retrieval of Credentials 13h
  • CVE-2025-13173 Improper Token Revocation via Session-Bound Token Flow in Multiple WSO2 Products Allows Unauthorized Access After Session Termination 13h
  • CVE-2025-7043 Refresh Token Misuse via Validation Flaw in Multiple WSO2 Products Enables Unauthorized Resource Consumption 13h
  • CVE-2024-4412 Expression Language Injection via User Input in Multiple WSO2 Products Permits Arbitrary Operations 13h
  • CVE-2024-4457 Remote Code Execution via JDBC User Store Configuration in Multiple WSO2 Products Allows Arbitrary Code Execution 1d
  • CVE-2025-5802 Username Enumeration via Self Registration Flow in Multiple WSO2 Products Allows User Account Discovery Sep 15, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No FIRST EPSS score.
  • No fixed version, patch or mitigation documented.
  • No CISA SSVC assessment.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-6623 is "Stored Cross-Site Scripting via XML Input in Multiple WSO2 Products Allows UI Manipulation and Redirection", rated Medium. It affects Api Control Plane (WSO2); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.3 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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