Denial of Service in jquery

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.

Identifiers

CWEs

CWE id Name
CWE-400 Uncontrolled Resource Consumption
CWE-674 Uncontrolled Recursion

Credits

  • anlakii (analyst)

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

References

cvelogic Threat Intelligence