CVE-2026-67598 emlog CVE debrief

Who should care

Defenders responsible for Emlog Pro installations, especially in network configurations where Emlog Pro is exposed, should assess and remediate this vulnerability to prevent potential man-in-the-middle attacks and unauthorized access to AI requests and responses.

Why it matters

CVE-2026-67598 is a critical vulnerability in Emlog Pro that allows network-adjacent attackers to intercept HTTPS requests to LLM providers, extract sensitive information, and inject crafted AI responses. Defenders should prioritize verifying and remediating this vulnerability, especially in network configurations where Emlog Pro is exposed.

• Potential extraction of Authorization Bearer API keys
• Possible injection of crafted AI responses
• Man-in-the-middle interception of AI requests and responses
• Verification of Emlog Pro version and configuration

Technical summary

Emlog Pro through 2.6.23 contains a disabled TLS certificate validation vulnerability in include/service/ai.php. This allows network-adjacent attackers to intercept outbound HTTPS requests to configured LLM providers by presenting arbitrary TLS certificates. The vulnerability affects the sendStream(), sendImageRequest(), send(), and fetchSearchHtml() functions, as CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST are unconditionally disabled.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability, especially in network configurations where Emlog Pro is exposed.

Recommended defensive actions

• Verify Emlog Pro version and configuration
• Enable TLS certificate validation
• Monitor for suspicious AI requests and responses
• Update to a remediated version if available
• 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 confirmed in Emlog Pro through version 2.6.23. The CVE record and NVD entry provide details on the vulnerability, but specific version remediation information is not provided. Defenders should verify Emlog Pro version and configuration, enable TLS certificate validation, and monitor for suspicious AI requests and responses. The lack of TLS certificate validation allows network-adjacent attackers to intercept outbound HTTPS requests to configured LLM providers by presenting arbitrary TLS certificates. Evidence is 7

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.