CVE-2022-28946

An issue in the component ast/parser.go of Open Policy Agent v0.39.0 causes the application to incorrectly interpret every expression, causing a Denial of Service (DoS) via triggering out-of-range memory access.

Published: 2022-05-19 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-28946 is rated Moderate Risk (50.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.95%). 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-2022-28946

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 0.43% 0.95% +0.52%
2 2025-11-21 0.33% 0.43% +0.10%
3 2025-11-18 — 0.33% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-28946

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:N/I:N/A:H 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2022-28946

GitHub Security Advisory for CVE-2022-28946

GHSA-x7f3-62pm-9p38 · Severity: high · Ecosystem: go — Out of bounds memory access in github.com/open-policy-agent/opa

OS Trackers for CVE-2022-28946

vendor priority summary link
suse medium CVE-2022-28946 severity moderate: SUSE including 4 source package names (starboard-0.15.6-1.1, trivy-0.28.0-1.1, trivy-0.28.0-bp154.2.3.1, trivy-0.30.4-bp153.8.1), 6 product×package rows across 5 product lines (SUSE Package Hub 15 SP3, SUSE Package Hub 15 SP4, … (5 product lines)): Fixed 6. https://www.suse.com/security/cve/CVE-2022-28946/

Affected software / configurations for CVE-2022-28946

Vendor Product Version Raw CPE
openpolicyagent open_policy_agent 0.39.0 cpe:2.3:a:openpolicyagent:open_policy_agent:0.39.0:*:*:*:*:*:*:*

References for CVE-2022-28946

cvelogic Threat Intelligence