EspoCRM through 10.0.8 uses PHP's rand() function to generate tokens for lead-capture opt-in, event invitation, and campaign URLs instead of a cryptographically secure generator. Remote unauthenticated attackers can guess these roughly 31-bit tokens to confirm opt-ins, accept or decline event invitations on behalf of other contacts, and access event details.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Espocrm Espocrm
cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*
|
— |
<= 10.0.8
|
References 6
https://gist.github.com/kazisabu/9e3109aab24245fde19b88f53f965e93
disclosure@vulncheck.com
https://github.com/espocrm/espocrm
disclosure@vulncheck.com
https://github.com/espocrm/espocrm/blob/10.0.8/application/Espo/Core/Utils/Util…
disclosure@vulncheck.com
https://github.com/espocrm/espocrm/blob/10.0.8/application/Espo/Repositories/Un…
disclosure@vulncheck.com
https://github.com/espocrm/espocrm/commit/8e5555c1ee0ed1e92a9ad54e62f735ac2c405…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/espocrm-through-10.0.8-weak-token-generati…
disclosure@vulncheck.com