OpnForm <1.9.3: HTTP Header X-Forwarded-For Auth Bypass
CVE-2025-11441 Published on October 8, 2025
JhumanJ OpnForm HTTP Header excessive authentication
A vulnerability was identified in JhumanJ OpnForm up to 1.9.3. The affected element is an unknown function of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to improper restriction of excessive authentication attempts. The attack is possible to be carried out remotely. A high degree of complexity is needed for the attack. The exploitability is described as difficult. The exploit is publicly available and might be used. The identifier of the patch is 11e99960e14ca986b1a001a56e7533223d2cfa5b. It is suggested to install a patch to address this issue.
Timeline
Advisory disclosed
VulDB entry created
VulDB entry last update
Weakness Types
Improper Restriction of Excessive Authentication Attempts
The software does not implement sufficient measures to prevent multiple failed authentication attempts within in a short time frame, making it more susceptible to brute force attacks.
What is an Insufficient anti-automation Vulnerability?
The software does not properly limit the number or frequency of interactions that it has with an actor, such as the number of incoming requests. This can allow the actor to perform actions more frequently than expected. The actor could be a human or an automated process such as a virus or bot. This could be used to cause a denial of service, compromise program logic (such as limiting humans to a single vote), or other consequences. For example, an authentication routine might not limit the number of times an attacker can guess a password. Or, a web site might conduct a poll but only expect humans to vote a maximum of once a day.
CVE-2025-11441 has been classified to as an Insufficient anti-automation vulnerability or weakness.
Affected Versions
JhumanJ OpnForm:- Version 1.9.0 is affected.
- Version 1.9.1 is affected.
- Version 1.9.2 is affected.
- Version 1.9.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.