CVE-2026-92298 EspoCRM CVE debrief

Who should care

Defenders responsible for EspoCRM instances, particularly those using version 10.0.8 or earlier, should assess exposure and verify patch application to prevent potential token guessing and unauthorized access.

Why it matters

CVE-2026-92298 is a medium-severity vulnerability in EspoCRM that allows remote unauthenticated attackers to guess tokens generated using PHP's rand() function, potentially leading to unauthorized access or confirmation of opt-ins. Defenders should assess exposure, verify patch application, and consider additional security measures.

• Remote unauthenticated attackers can guess tokens to confirm opt-ins or access event details
• Potential for unauthorized access to event details or confirmation of opt-ins on behalf of other contacts
• Need for defenders to verify patch application and assess exposure
• Possible impact on event management and lead capture functionality

Technical summary

The EspoCRM application uses PHP's rand() function to generate tokens for lead-capture opt-in, event invitation, and campaign URLs. This can be exploited by remote unauthenticated attackers to guess the roughly 31-bit tokens and gain unauthorized access to event details or confirm opt-ins on behalf of other contacts. The vulnerability has a medium severity and defenders should assess exposure and verify patch application to prevent potential token guessing and unauthorized access. The use of PHP's rand() function for token generation is a security concern as it is not cryptographically secure.

Defensive priority

Medium priority for defenders to assess exposure and verify patch application, given the potential for token guessing and unauthorized access.

Recommended defensive actions

• Assess exposure by verifying if the EspoCRM instance is running version 10.0.8 or earlier
• Review and apply the patch commit provided by the vendor, if available
• Monitor for suspicious activity related to token guessing or unauthorized access
• Consider implementing additional security measures, such as token validation or rate limiting
• 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, including the use of PHP's rand() function for token generation and the potential impacts. However, the corpus does not provide explicit information on exploitation or victim data.

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.