@ianwalter/merge Prototype Pollution via `merge` function

Description

All versions of package @ianwalter/merge are vulnerable to Prototype Pollution via the main (merge) function. @ianwalter/merge is deprecated and the maintainer suggests using @generates/merger instead.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Source code
Browse source ↗
Published (advisory)
2022-07-26 00:01:05 UTC
Updated
2023-01-31 05:01:31 UTC
GitHub reviewed
2022-07-26 19:37:36 UTC
NVD published
2022-07-25

EPSS Score

Score Percentile
0.39% 59.55%

CVSS Scores

Base score Version Severity Vector
5.6 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L 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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.

Identifiers

CWEs

CWE id Name
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Credits

  • RDIL (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm @ianwalter/merge <= 9.0.1

References

cvelogic Threat Intelligence