CVE-2017-0897
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with...
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
- Record
CVE-2017-0897- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-330, CWE-331
- Updated
- 2026-11-02
CVE List No score
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
- Record
CVE-2017-0897- Weakness
- CWE-330
- Updated
- 2026-11-02
EUVDEUVD-2017-1250 No score
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
- Record
EUVD-2017-1250- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cqj4-ph2f-7q79
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with...
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
- Record
GHSA-cqj4-ph2f-7q79- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-330, CWE-331
- Updated
- 2026-11-02
OSV
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
- Record
CVE-2017-0897- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-0897 is a high vulnerability (CVSS 7.5) in Ellislab Expressionengine, published June 22, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.04%, the 90th percentile. No source names a fixed version.
References
securityfocus.com/bid/99242
docs.expressionengine.com/v2/about/changelog.html
hackerone.com/reports/215890
expressionengine.com/blog/expressionengine-3.5.5-and-2.11.8-released
nvd.nist.gov/vuln/detail/CVE-2017-0897
github.com/advisories/GHSA-cqj4-ph2f-7q79