CVE-2021-3645
Prototype Pollution in viking04/merge
CRITICAL
9.8
CVSS Score
Published: September 10, 2021 at 11:04 AM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 2 vendorsMergeProject Merge
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
Description
merge is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 1.0.2
Affected range stops below 1.0.2, so it looks safe — our inference, not a vendor statement
v < 1.0.2
Affected range stops below 1.0.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/viking04/merge/commit/baba40332080b38b33840d2614df6d4142dedaf6x_refsource_CONFIRMExploitThird Party Advisory
Source: [email protected]
https://huntr.dev/bounties/ef387a9e-ca3c-4c21-80e3-d34a6a896262CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1321
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