CVE-2020-36567 | Arbitrary log line injection in github.com/gin-gonic/gin

Exp

Unsanitized input in the default logger in github.com/gin-gonic/gin before v1.6.0 allows remote attackers to inject arbitrary log lines.

Published: 2022-12-27 Last update: 2025-04-11 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-36567 is rated High Exploit Risk (67.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.47%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2020-36567

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-36567

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 2026-03-25 0.21% 0.47% +0.26%
2 2025-11-21 0.28% 0.21% -0.06%
3 2025-11-18 — 0.28% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-36567

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:H/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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2020-36567

GitHub Security Advisory for CVE-2020-36567

GHSA-6vm3-jj99-7229 · Severity: high · Ecosystem: go — Gin's default logger allows unsanitized input that can allow remote attackers to inject arbitrary log lines

OS Trackers for CVE-2020-36567

vendor priority summary link
debian not yet assigned CVE-2020-36567 not yet assigned priority: Debian including 1 source packages (golang-github-gin-gonic-gin), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-36567
redhat medium — https://access.redhat.com/security/cve/CVE-2020-36567
ubuntu medium CVE-2020-36567 medium priority: Ubuntu including 1 source packages (golang-github-gin-gonic-gin), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 8, ignored 2, needs-triage 2, released 1. https://ubuntu.com/security/CVE-2020-36567

Affected software / configurations for CVE-2020-36567

Vendor Product Version Raw CPE
gin-gonic gin < 1.6.0 cpe:2.3:a:gin-gonic:gin:*:*:*:*:*:*:*:*

References for CVE-2020-36567

cvelogic Threat Intelligence