VulnerabilityPublished 2 Nov 2026

CVE-2024-12139: The error handling implementation fails to properly sanitize or validate user-supplied input within

Source GCVE Database

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Authoritative record:CVE-2024-12139· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium · fixed in 4.2.0.148 : update WSO2 API Manager when convenient.

Data as of 2 Nov 2026, 19:16 UTC

CVSS 3.1 base score

4.3Medium

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

Thin evidence

One scorer or none

CVSS scores by source
CNA (WSO2)	CVSS 3.1	4.3

Patch: Available – fixed in 4.2.0.148, 4.1.0.210, 3.2.1.49 +4

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
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: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
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 2 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 2 Nov 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity 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.

ghsa-xr7f-9j62-3382

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
WSO2WSO2 API Manager	Affected >=4.2.0 <4.2.0.148	Fixed in 4.2.0.148
WSO2WSO2 API Manager	Affected >=4.1.0 <4.1.0.210	Fixed in 4.1.0.210
WSO2WSO2 API Manager	Affected >=3.2.1 <3.2.1.49	Fixed in 3.2.1.49
WSO2WSO2 Identity Server	Affected >=6.0.0 <6.0.0.229	Fixed in 6.0.0.229
WSO2WSO2 Identity Server	Affected >=5.11.0 <5.11.0.385	Fixed in 5.11.0.385
WSO2WSO2 Identity Server	Affected >=5.10.0 <5.10.0.346	Fixed in 5.10.0.346

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

AI-suggested

If you cannot patch yet, users should be cautious of unexpected or suspicious error messages and verify the authenticity of communications.

Description

CVE-2024-12139 is a vulnerability in an application's error handling implementation where user-supplied input in URL parameters is not properly sanitized or validated. This flaw allows attackers to inject arbitrary content into error messages, potentially misleading users through social engineering attacks such as phishing or credential theft. The vulnerability has a medium severity rating with a CVSS score of 4.3.

Impact

The impact is limited to integrity, allowing attackers to alter error messages to inject misleading content. This can facilitate social engineering attacks such as phishing or credential theft by deceiving users with falsified error messages. There is no direct impact on confidentiality or availability according to the CVSS vector and description.

Summary

The vulnerability arises from improper sanitization and validation of user input within URL parameters in the error handling mechanism. Attackers can exploit this to manipulate error messages displayed by the application, injecting arbitrary content. This manipulation can be leveraged to conduct social engineering attacks by replacing legitimate error messages with malicious content, thereby deceiving users into compromising sensitive information or performing harmful actions. There is no indication of confidentiality or availability impact, and no known exploits in the wild have been reported.

References

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