Is CVE-2026-92298 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-92298 being exploited in the wild.

How severe is CVE-2026-92298?

Medium severity, with a CVSS score of 4.8, published 16 September 2026.

Is there a fix for CVE-2026-92298?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-92298 attacked?

It is attacked over the network.

Am I affected by CVE-2026-92298?

Check whether you run Espocrm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-92298: EspoCRM weak random token generation for opt-in and invitations

CVE-2026-92298 · Severity: medium · CVSS 4.8 · Published 2026-09-16

EspoCRM is an open-source customer relationship management platform used by businesses to manage leads, contacts, and events. The application uses PHP's non-cryptographic rand() function to generate tokens for email opt-ins, event invitations, and campaign links. An unauthenticated attacker can guess these roughly 31-bit tokens to confirm opt-ins, accept/decline invitations on behalf of other contacts, and access event details, potentially disrupting business processes and customer relationships.

Technologies: Espocrm. Vendors: Espocrm.

Quick answers

Is CVE-2026-92298 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-92298 being exploited in the wild.
How severe is CVE-2026-92298?: Medium severity, with a CVSS score of 4.8, published 16 September 2026.
Which products and versions are affected?: Espocrm through 10.0.8.
Is there a fix for CVE-2026-92298?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-92298 attacked?: It is attacked over the network.
Am I affected by CVE-2026-92298?: Check whether you run Espocrm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability stems from the use of PHP's rand() function (CWE-330, CWE-338) to generate security tokens in application/Espo/Core/Utils/Util.php:585-590 instead of a cryptographically secure random generator. The tokens provide only ~31 bits of entropy (~2 billion possibilities), making them feasible to brute force. Token verification endpoints return different HTTP responses (500 vs 404) for valid vs invalid tokens, creating an oracle that enables efficient brute-force attacks. No rate limiting is implemented on token verification. An unauthenticated remote attacker can exploit this to guess tokens and perform unauthorized actions including confirming opt-ins, accepting/declining event invitations on behalf of other contacts, and accessing event details. EspoCRM versions through 10.0.8 are affected.

Affected products

EspoCRM EspoCRM through 10.0.8

Timeline

2026-09-16: disclosed

References

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