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Description
Affected versions of jquery use a lowercasing logic on attribute names. When given a boolean attribute with a name that contains uppercase characters, jquery enters into an infinite recursion loop, exceeding the call stack limit, and resulting in a denial of service condition.
Recommendation
Update to version 3.0.0 or later.
Basic information
Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Browse source ↗
Published (advisory)
2018-01-22 13:32:42 UTC
Updated
2025-09-02 22:35:02 UTC
GitHub reviewed
2020-06-16 21:46:22 UTC
NVD published
2018-01-18
EPSS Score
Score
Percentile
0.89%
75.51%
CVSS Scores
Base score
Version
Severity
Vector
7.5
3.0
—
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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: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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
CWEs
CWE id
Name
CWE-400
Uncontrolled Resource Consumption
CWE-674
Uncontrolled Recursion
Affected packages (4)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
npm
jquery
= 3.0.0-rc.1
3.0.0
—
nuget
jQuery
= 3.0.0-rc.1
3.0.0
—
rubygems
jquery-rails
= 3.0.0-rc.1
3.0.0
—
maven
org.webjars.npm:jquery
= 3.0.0-rc1
3.0.0
—
cvelogic
Threat Intelligence