CVE-2025-11439VulnerabilityPublished 8 Oct 2025

CVE-2025-11439: JhumanJ OpnForm · Missing Authorization

Affects JhumanJ OpnFormSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Oct 2025
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 2026-10-26.

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.

What to do

Affected software

Product	Affected	Fixed in
JhumanJ OpnForm	Affected =1.9.0 =1.9.1 =1.9.2 =1.9.3	Fixed in–

AI-suggested

European organizations should immediately identify all instances of JhumanJ OpnForm running versions 1.9.0 through 1.9.3 and apply the vendor-provided patch (commit 11d97d78f2de2cb49f79baed6bde8b611ec1f384) to remediate the missing authorization vulnerability. In addition to patching, organizations should audit and strengthen access controls on the /show/integrations endpoint to ensure proper authorization enforcement. Network-level protections such as web application firewalls (WAFs) can be configured to monitor and block suspicious requests targeting this endpoint. Implementing strict network segmentation and limiting exposure of OpnForm instances to trusted networks reduces attack surface. Continuous monitoring and logging of access to integration endpoints should be enabled to detect potential exploitation attempts. Finally, organizations should update incident response plans to include this vulnerability and educate relevant staff on the risks and mitigation steps.

Description

A vulnerability was found in JhumanJ OpnForm up to 1.9.3. This issue affects some unknown processing of the file /show/integrations. Performing manipulation results in missing authorization. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The patch is named 11d97d78f2de2cb49f79baed6bde8b611ec1f384. It is recommended to apply a patch to fix this issue.

Impact

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality, as unauthorized actors could access sensitive integration data or configurations via the /show/integrations endpoint. While the vulnerability does not directly impact system integrity or availability, unauthorized access could facilitate further attacks or data exfiltration. Organizations in sectors such as finance, healthcare, and government that rely on JhumanJ OpnForm for form processing or integrations may face increased risk of data breaches or compliance violations under GDPR. The ease of remote exploitation without user interaction or high privileges increases the threat landscape, especially for organizations with exposed OpnForm instances. Failure to patch could lead to unauthorized data access, reputational damage, and potential regulatory penalties. However, the absence of known active exploits currently reduces immediate risk, though the public exploit disclosure necessitates prompt action.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 8 Oct 2025, 06:46 UTC

Technical details

References

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