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CVE-2022-24762

Exposure of Sensitive Information to an Unauthorized Actor in sysend.js

MEDIUM
6.5
CVSS Score
Published: March 14, 2022 at 10:50 PM UTC
Updated: June 17, 2026 at 04:32 AM UTC
2 products affected across 2 vendorsSysend.jsSysend

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

sysend.js is a library that allows a user to send messages between pages that are open in the same browser. Users that use cross-origin communication may have their communications intercepted. Impact is limited by the communication occurring in the same browser. This issue has been patched in sysend.js version 1.10.0. The only currently known workaround is to avoid sending communications that a user does not want to have intercepted via sysend messages.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sysend.js· Sysend Js Projectnpm
95%
v < 1.10.0
Affected range stops below 1.10.0, so it looks safe — our inference, not a vendor statement
Sysend· Jcubic
60%
v < 1.10.0pkg:npm/sysend@0 ≤ v < pkg:npm/[email protected]pkg:npm/sysend@0
Affected range stops below 1.10.0, so it looks safe — our inference, not a vendor statement
Affected range stops below pkg:npm/[email protected], so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/jcubic/sysend.js/commit/a24f4b776fb18191ae0f7e3d90c2c7bec459431a
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/jcubic/sysend.js/issues/33
x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/jcubic/sysend.js/releases/tag/1.10.0
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/jcubic/sysend.js/security/advisories/GHSA-4vvg-x86p-mvqc

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-346

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