01 Record
CVE-2017-0897
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.
UnratedPUBLISHEDCNA: hackerone
CNA base scoreUnratedNo CNA CVSS vector
02 Description
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.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 4.04% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.1% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-06-22 21:00Z9 YR AGO
- Last updated
- 2024-08-05 13:25Z2 YR AGO
- Reserved
- 2016-11-30
- Assigning CNA
- hackerone
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- c9a6737a08f8354c44c66fb985b15713c11a1336df533ebfd9d377e247bf8ede
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.securityfocus.com99242http://www.securityfocus.com/bid/99242
- docs.expressionengine.comhttps://docs.expressionengine.com/v2/about/changelog.html#version-2-11-8
- hackerone.comhttps://hackerone.com/reports/215890
- docs.expressionengine.comhttps://docs.expressionengine.com/latest/about/changelog.html#version-3-5-5
- expressionengine.comhttps://expressionengine.com/blog/expressionengine-3.5.5-and-2.11.8-released