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| Vulnerability ID | VCID-bu74-a78a-mkft |
| Aliases |
CVE-2018-12615
GHSA-4284-jfhc-f854 |
| Summary | Incorrect Permission Assignment for Critical Resource An issue was discovered in Phusion Passenger. The set of groups (gidset) is not set correctly, leaving it up to randomness (i.e., uninitialized memory) which supplementary groups are actually being set while lowering privileges. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.8 |
| Risk | 2.4 |
| Affected and Fixed Packages | Package Details |
| System | Score | Found at |
|---|---|---|
| epss | 0.00198 | https://api.first.org/data/v1/epss?cve=CVE-2018-12615 |
| cvssv3.1 | 5.3 | https://github.com/phusion/passenger |
| generic_textual | MODERATE | https://github.com/phusion/passenger |
| cvssv3 | 5.3 | https://github.com/phusion/passenger/commit/4e97fdb86d0a0141ec9a052c6e691fcd07bb45c8 |
| cvssv3.1 | 5.3 | https://github.com/phusion/passenger/commit/4e97fdb86d0a0141ec9a052c6e691fcd07bb45c8 |
| generic_textual | MODERATE | https://github.com/phusion/passenger/commit/4e97fdb86d0a0141ec9a052c6e691fcd07bb45c8 |
| cvssv3.1 | 5.3 | https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12615.yml |
| generic_textual | MODERATE | https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12615.yml |
| cvssv3.1 | 5.3 | https://nvd.nist.gov/vuln/detail/CVE-2018-12615 |
| generic_textual | MODERATE | https://nvd.nist.gov/vuln/detail/CVE-2018-12615 |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.41755 |
| EPSS Score | 0.00198 |
| Published At | May 30, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-05-30T20:53:50.288451+00:00 | GitLab Importer | Import | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/gem/passenger/CVE-2018-12615.yml | 38.6.0 |