CVE-2026-114460 pbuchbinder CVE debrief

Who should care

Defenders and administrators using mod_qos should assess exposure and verify security configurations to prevent potential security-rule bypass. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Additionally, they should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed systems while remem

Why it matters

CVE-2026-114460 allows an unauthenticated remote attacker to bypass security rules in mod_qos due to an off-by-one pointer calculation error during JSON body merging. Defenders and administrators using mod_qos should assess exposure, verify security configurations, and apply patches to prevent potential security-rule bypass and data exposure.

• Security-rule bypass may allow unauthorized access
• Potential for data exposure or manipulation
• Need for verification of security configurations and rule settings
• Patching or updating mod_qos to prevent exploitation

Technical summary

An off-by-one pointer calculation error occurs in mod_qos when merging request body parameters with an existing URL query, truncating the query string during security evaluation. This allows an unauthenticated remote attacker to bypass configured security rules by submitting a crafted request. The vulnerability affects mod_qos and can be exploited by submitting a crafted request that conceals prohibited values from inspection. Defenders and administrators using mod_qos should assess exposure, verify security configurations, and apply patches to prevent potential security-rule bypass.

Defensive priority

Assess exposure, verify security configurations, and apply patches for mod_qos

Recommended defensive actions

• Assess exposure by checking if mod_qos is used in your environment
• Verify security configurations and rule settings
• Apply patches or updates provided by the vendor
• Monitor for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability in mod_qos, including an off-by-one pointer calculation error during JSON body merging, which allows for security-rule bypass. The source item and CVE record provide evidence of the vulnerability and its potential impact. However, additional verification is needed to confirm affected scope and severity. Defenders should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.