CVE-2026-3096VulnerabilityPublished 10 Sep 2026

CVE-2026-3096: WSO2 API Control Plane · Improper Input Validation

Affects WSO2 API Control PlaneSource CVE Database V5

Not known to be exploited · CVSS 4.7 Medium : upgrade to 4.6.0.18 or 4.5.0.54 when convenient.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score

4.7Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.6.0.18, 4.5.0.54, 4.6.0.16 +7

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Changed
Confidentiality: None
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

cwe-603

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
WSO2WSO2 API Control Plane	Affected >=4.5.0 <4.5.0.54 >=4.6.0 <4.6.0.18	Fixed in 4.6.0.18 4.5.0.54
WSO2WSO2 API Manager	Affected >=3.2.0 <3.2.0.468 >=3.2.1 <3.2.1.87 >=4.1.0 <4.1.0.252 >=4.2.0 <4.2.0.192 >=4.3.0 <4.3.0.103 >=4.4.0 <4.4.0.67 >=4.5.0 <4.5.0.52 >=4.6.0 <4.6.0.16	Fixed in 4.6.0.16 4.5.0.52 4.4.0.67 4.3.0.103 4.2.0.192 4.1.0.252 3.2.1.87 3.2.0.468
Mavenorg.wso2/carbon-apimgt-control-plane`pkg:maven/org.wso2/carbon-apimgt-control-plane`Other threats	Affected 3.2.0 <3.2.0.468 3.2.1 <3.2.1.87 4.1.0 <4.1.0.252 4.2.0 <4.2.0.192 4.3.0 <4.3.0.103 4.4.0 <4.4.0.67 4.5.0 <4.5.0.54 4.5.0 <4.5.0.52 4.6.0 <4.6.0.18 4.6.0 <4.6.0.16	Fixed in 3.2.0.468 3.2.1.87 4.1.0.252 4.2.0.192 4.3.0.103 4.4.0.67 4.5.0.54 4.5.0.52 4.6.0.18 4.6.0.16

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

No explicit patch links or vendor advisory details are provided in the input data. If you cannot patch yet, users should be cautious when clicking external links in the WSO2 API Control Plane web portals. Consider implementing browser security policies or user education to mitigate risk.

Description

CVE-2026-3096 is an improper input validation vulnerability in WSO2 API Control Plane web portals. It arises because external links can be opened in a new browser tab while the originating window retains access to the new page. This allows interaction between the two browser contexts, potentially enabling an attacker to manipulate the original trusted window after a user clicks a malicious external link. Such manipulation can lead to phishing redirections or unauthorized actions within the trusted site context. The vulnerability has a medium severity with a CVSS score of 4.7.

Impact

The vulnerability allows an attacker to manipulate the original trusted application window after a user clicks a malicious external link. This can lead to user redirection to phishing pages, credential theft, or other unauthorized actions within the context of the trusted site. There is no direct impact on confidentiality, but integrity is impacted due to possible unauthorized manipulation. Availability is not affected. No known exploits in the wild have been reported.

CWE-20Improper Input Validation (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #18OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Attack Surface Reduction
Consider using language-theoretic security (LangSec) techniques that characterize inputs using a formal language and build "recognizers" for that language. This effectively requires parsing to be a distinct layer that effectively enforces a boundary between raw input and internal data representations, instead of…
Architecture and Design · Libraries or Frameworks
Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter the product, including but not limited to: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any…
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
Injection Prevention (opens in a new tab)
SQL Injection Prevention (opens in a new tab)
Injection Prevention in Java (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Buffer Overflow via Environment Variables (opens in a new tab)
Server Side Include (SSI) Injection (opens in a new tab)
Cross Zone Scripting (opens in a new tab)
Command Line Execution through SQL Injection (opens in a new tab)
Object Relational Mapping Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5164/ (opens in a new tab)

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Sep 2026, 00:44 UTC

WeaknessesCWE-20

Technical details

References

Community reviews

Related threats