CVE-2026-31924 Apache Software Foundation CVE debrief

Who should care

Defenders and administrators of Apache APISIX systems should assess exposure and upgrade to version 3.16.0 to fix the vulnerability. This includes reviewing and updating affected systems, monitoring for potential security issues, and verifying that the upgrade has been successfully implemented. Additionally, defenders should consider implementing compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-31924 is a Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX, affecting versions from 2.99.0 through 3.15.0. Defenders and administrators should assess exposure and upgrade to version 3.16.0 to fix the issue.

• Sensitive information may be intercepted or accessed by unauthorized parties
• Potential for eavesdropping or tampering with log data
• Need to verify affected systems and upgrade to version 3.16.0

Technical summary

The tencent-cloud-cls log export uses plaintext HTTP, affecting Apache APISIX versions from 2.99.0 through 3.15.0. This vulnerability allows sensitive information to be intercepted or accessed by unauthorized parties, potentially leading to eavesdropping or tampering with log data. The issue is fixed in version 3.16.0. Defenders and administrators should assess exposure and upgrade to version 3.16.0 to fix the issue. There is no indication of active exploitation or publicly available exploits. However, defenders should verify affected systems and plan for an upgrade to version 3.16.0.

Defensive priority

Upgrade to version 3.16.0 to fix the Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX.

Recommended defensive actions

• Upgrade to version 3.16.0
• Review and update affected systems
• Monitor for potential security issues
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• 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 NVD vulnerability detail page provide information on the Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. The tencent-cloud-cls log export uses plaintext HTTP, affecting Apache APISIX versions from 2.99.0 through 3.15.0. There is no indication of active exploitation or publicly available exploits. However, defenders should verify affected systems and plan for an upgrade to version 3.16.0. The CVE record was published on 2026-04-14T09:16:35.953Z and has not been modified since then.

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.