Home
» Security vulnerabilities
» CVE-2020-36655
Yii Yii2 Gii before 2.2.2 allows remote attackers to execute arbitrary code via the Generator.php messageCategory field. The attacker can embed arbitrary PHP code into the model file.
NVD Status： Modified ，CVE State: published
Threat Intelligence & Risk Assessment for CVE-2020-36655
Conclusion & alert: CVE-2020-36655 is rated High Exploit Risk (80.2/100) : CVSS High severity, with medium exploitation likelihood (EPSS 4.20%).Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB).Mandatory action: 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-2020-36655
Exploit prediction scoring system (EPSS) score for CVE-2020-36655
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
2026-01-31
5.15%
4.20%
-0.95%
2
2026-01-25
5.31%
5.15%
-0.16%
3
2026-01-22
—
5.31%
—
Full EPSS history
(22 records total)
Common vulnerability scoring system (CVSS) metrics for CVE-2020-36655
CVSS metrics for this CVE.
Base score
Version
Severity
Vector
Exploitability
Impact
Score source
8.8
3.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
2.8
5.9
[email protected]
8.8
3.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:L)
A normal user session is enough; they don’t have to be admin.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
2.8
5.9
134c704f-9b21-4f2e-91b3-4a467353bcc0
Weakness enumeration for CVE-2020-36655
GitHub Security Advisory for CVE-2020-36655
GHSA-3mpg-q26j-83j5 · Severity: high · Ecosystem: composer
— Command injection in yiisoft/yii2-gii
Affected software / configurations for CVE-2020-36655
Vendor
Product
Version
Raw CPE
yiiframework
gii
< 2.2.2
cpe:2.3:a:yiiframework:gii:*:*:*:*:*:yii2:*:*
References for CVE-2020-36655
cvelogic
Threat Intelligence