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CVE-2017-0897

20
FAUCET Score

CVE-2017-0897 affects ExpressionEngine versions 2.x prior to 2.11.8 and 3.x prior to 3.5.5, stemming from the use of weak entropy in object signing token generation. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating that an unauthenticated attacker can remotely guess the token with low attack complexity, potentially leading to remote code execution. Despite its severity, there is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.0CPE matchmatch criteria
cpe:2.3:a:expressionengine:expressionengine:2.0.0:public_beta:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:a:expressionengine:expressionengine:2.0.1:public_beta:*:*:*:*:*:*
2.0.2CPE matchmatch criteria
cpe:2.3:a:expressionengine:expressionengine:2.0.2:public_beta:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:expressionengine:expressionengine:2.1.0:*:*:*:*:*:*:*
2.1.1CPE matchmatch criteria
cpe:2.3:a:expressionengine:expressionengine:2.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.04%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0404 is in the 82nd percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.expressionengine.com / latest/about/changelog.html
Vendor Advisory
docs.expressionengine.com / v2/about/changelog.html
Vendor Advisory
expressionengine.com / blog/expressionengine-3.5.5-and-2.11.8-released
Vendor Advisory
hackerone.com / reports/215890
Permissions Required
securityfocus.com / bid/99242
Third Party AdvisoryVDB Entry