CVE-2018-3779
CVE-2018-3779 is a critical-severity vulnerability in Activesupport Project Activesupport with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 6% (93rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Activesupport Project Activesupport
- Published:
- Last modified:
Description
active-support ruby gem 5.2.0 could allow a remote attacker to execute arbitrary code on the system, caused by containing a malicious backdoor. An attacker could exploit this vulnerability to execute arbitrary code on the system.
Frequently asked questions
- What is CVE-2018-3779?
- active-support ruby gem 5.2.0 could allow a remote attacker to execute arbitrary code on the system, caused by containing a malicious backdoor. An attacker could exploit this vulnerability to execute arbitrary code on the system.
- How severe is CVE-2018-3779?
- CVE-2018-3779 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-3779 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-3779?
- CVE-2018-3779 affects Activesupport Project Activesupport. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-3779?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-3779 published?
- CVE-2018-3779 was published on 2018-08-10 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:activesupport_project:activesupport:5.2.0:*:*:*:*:ruby:*:*
More vulnerabilities in Activesupport Project Activesupport
- CVE-2023-22796 — High (CVSS 7.5): A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed…
All CVEs affecting Activesupport Project Activesupport →
Other CWE-77 (Command Injection) vulnerabilities
- CVE-2026-23652 — Critical (CVSS 10.0): Improper neutralization of special elements used in a command ('command injection') in Microsoft Power Pages allows an…
- CVE-2025-59818 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file…
- CVE-2025-64093 — Critical (CVSS 10.0): Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the…
- CVE-2025-64090 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute commands via the hostname of the device.
- CVE-2025-61492 — Critical (CVSS 10.0): A command injection vulnerability in the execute_command function of terminal-controller-mcp 0.1.7 allows attackers to…
- CVE-2025-10035 — Critical (CVSS 10.0): A deserialization vulnerability in the License Servlet of Fortra's GoAnywhere MFT allows an actor with a validly forged…