CVE-2021-21135
MEDIUM
6.5
CVSS Score
Published: February 9, 2021 at 01:56 PM UTC
Updated: June 17, 2026 at 03:34 AM UTC
2 products affected across 2 vendorsChromeEdge Chromium
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Severity
MEDIUM6.5
Exploit prediction
EPSS 19%
Description
Inappropriate implementation in Performance API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 88.0.4324.96
Affected range stops below 88.0.4324.96, so it looks safe — our inference, not a vendor statement
v < 88.0.705.50
Affected range stops below 88.0.705.50, 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 (3)
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.htmlx_refsource_MISCPermissions RequiredThird Party Advisory
Source: [email protected]
https://crbug.com/1157818x_refsource_MISCThird Party Advisory
Source: [email protected]
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21135CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-346
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