CVE-2017-7540
Safemode Gem Has Incomplete List of Disallowed Inputs
rubygem-safemode, as used in Foreman, versions 1.3.2 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
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
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
rubygem-safemode, as used in Foreman, versions 1.3.2 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
- Record
CVE-2017-7540- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-184
- Updated
- 2026-11-02
CVE List No score
rubygem-safemode, as used in Foreman, versions 1.3.2 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
- Record
CVE-2017-7540- Weakness
- CWE-184
- Updated
- 2026-11-02
EUVDEUVD-2017-0171 No score
rubygem-safemode, as used in Foreman, versions 1.3.2 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
- Record
EUVD-2017-0171- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5vx5-9q73-wgp4
Safemode Gem Has Incomplete List of Disallowed Inputs
rubygem-safemode, as used in Foreman, versions 1.3.1 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
- Record
GHSA-5vx5-9q73-wgp4- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-184
- Updated
- 2026-11-02
OSV
rubygem-safemode, as used in Foreman, versions 1.3.2 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
- Record
CVE-2017-7540- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-5vx5-9q73-wgp4
Safemode Gem Has Incomplete List of Disallowed Inputs
rubygem-safemode, as used in Foreman, versions 1.3.1 and earlier are vulnerable to bypassing safe mode limitations via special Ruby syntax. This can lead to deletion of objects for which the user does not have delete permissions or possibly to privilege escalation.
- Record
GHSA-5vx5-9q73-wgp4- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-184
- Updated
- 2026-11-02
Affected products
Affected packages
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-2017-7540 is a critical vulnerability (CVSS 9.8) in Red Hat, Inc. Rubygem-safemode, published July 21, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.63%, the 76th percentile. Fixed in safemode 1.3.2.