CVE-2026-29168 Apache CVE debrief

Who should care

Apache HTTP Server administrators and users, as well as security teams and vulnerability management teams, should be aware of this vulnerability and take necessary actions to mitigate it. Defenders should review configurations, monitor for potential attacks, and upgrade to version 2.4.67 to fix the vulnerability.

Why it matters

CVE-2026-29168 is a high-severity vulnerability in Apache HTTP Server's mod_md via OCSP response data. It affects versions from 2.4.30 through 2.4.66. Defenders should upgrade to version 2.4.67, review configurations, and monitor for potential attacks.

• Potential denial of service due to resource exhaustion
• Possible security bypass or privilege escalation

Technical summary

The vulnerability affects Apache HTTP Server versions from 2.4.30 through 2.4.66 and can be fixed by upgrading to version 2.4.67. It is an Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's mod_md via OCSP response data. Defenders should upgrade to version 2.4.67 to fix the vulnerability and review configurations to prevent potential denial of service due to resource exhaustion and possible security bypass or privilege escalation. The vulnerability has a high-severity CVSS score of 7.3.

Defensive priority

Upgrade to version 2.4.67 to fix the vulnerability.

Recommended defensive actions

• Upgrade to version 2.4.67
• Review Apache HTTP Server configurations
• Monitor for potential attacks
• 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 vulnerability is described in the CVE record and NVD vulnerability detail page. The CVE record was published on 2026-05-05T14:16:08.507Z and has not been modified since then. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity. The official CVE Program record and NVD detail page provide source-provided CVE metadata and source-specific vulnerability assessment.

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.