CVE-2026-91145 Activiti - Expression Language Injection

Activiti <= 7.1.0.M6 contains an expression injection vulnerability caused by failure to validate hash-brace deferred expressions in process variables, letting attackers inject and execute expressions in mail task body fields, exploit requires crafted process variables.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.42% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Expression Language Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-917

Vendor fix

Update to the latest version beyond 7.1.0.M6.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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