CVE-2020-8151

There is a possible information disclosure issue in Active Resource <v5.1.1 that could allow an attacker to create specially crafted requests to access data in an unexpected way and possibly leak information.

Published: 2020-05-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-8151 is rated Moderate Risk (60.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.22%). EPSS rose +1.94% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-8151

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.29% 2.22% +1.94%
2 2025-03-30 0.96% 0.29% -0.67%
3 2025-03-29 — 0.96% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-8151

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-8151

GitHub Security Advisory for CVE-2020-8151

GHSA-46j2-xjgp-jrfm · Severity: high · Ecosystem: rubygems — Information disclosure issue in Active Resource

OS Trackers for CVE-2020-8151

vendor priority summary link
debian unimportant CVE-2020-8151 unimportant priority: Debian including 1 source packages (rails), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-8151
suse medium CVE-2020-8151 severity moderate: SUSE including 152 source package names (ansible-2.2.3.0-12.2, ansible-2.4.6.0-3.9.1, …), 272 product×package rows across 5 product lines (HPE Helion OpenStack 8, SUSE OpenStack Cloud 7, … (5 product lines)): Fixed 270, Known Not Affected 2. https://www.suse.com/security/cve/CVE-2020-8151/
ubuntu medium CVE-2020-8151 medium priority: Ubuntu including 7 source packages (rails, rails-4.0, …), 119 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 97, needs-triage 13, ignored 9. https://ubuntu.com/security/CVE-2020-8151

Affected software / configurations for CVE-2020-8151

Vendor Product Version Raw CPE
rubyonrails active_resource < 5.1.1 cpe:2.3:a:rubyonrails:active_resource:*:*:*:*:*:*:*:*
fedoraproject fedora 33 cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

References for CVE-2020-8151

cvelogic Threat Intelligence