CVE-2026-79678 Red Hat CVE debrief

Who should care

Defenders and administrators using FreeIPA should assess exposure and prioritize mitigation. This includes reviewing system configurations, applying patches or updates, and monitoring for suspicious activity. Security teams and vulnerability management programs should also be aware of this vulnerability and its potential impacts on their environments.

Why it matters

CVE-2026-79678 allows authenticated IPA principals to enumerate and read environment variables and cause denial of service, requiring defenders to verify and mitigate this vulnerability.

• Enumeration and reading of environment variables by authenticated principals
• Denial of service via memory exhaustion

Technical summary

The CVE-2026-79678 flaw in FreeIPA's idp-add command allows authenticated IPA principals to enumerate and read environment variables of the affected server process and cause denial of service via memory exhaustion. This vulnerability is particularly concerning for environments where idp-add is exposed to authenticated principals, as it could lead to unauthorized access to sensitive information and potential system compromise. Defenders should prioritize verifying and mitigating this vulnerability, especially in environments using FreeIPA.

Defensive priority

Defenders should prioritize verifying and mitigating this vulnerability, especially in environments using FreeIPA.

Recommended defensive actions

• Verify and apply patches or updates for FreeIPA's idp-add command
• Restrict access to the idp-add command to minimize exposure
• Monitor environment variables and server process activity for suspicious behavior
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE description indicates a flaw in FreeIPA's idp-add command, allowing authenticated IPA principals to enumerate and read environment variables and cause denial of service. Evidence is limited to the CVE description and related source references. Defenders should verify the vulnerability's presence in their environments and assess the potential impact based on their specific configurations and security postures.

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.