🛡️ CVE-2024-27088 — es5-ext

🟢 CVSS 2.0 — Low ⚠️ Exploit Public CWE-1333 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

es5-ext vulnerable to Regular Expression Denial of Service in function#copy and function#toStringTokens

Impact

Passing functions with very long names or complex default argument names into function#copy orfunction#toStringTokens may put script to stall

Patches

Fixed with https://github.com/medikoo/es5-ext/commit/3551cdd7b2db08b1632841f819d008757d28e8e2 and https://github.com/medikoo/es5-ext/commit/a52e95736690ad1d465ebcd9791d54570e294602

Published with v0.10.63

Workarounds

No real workaround aside of refraining from using above utilities.

References

https://github.com/medikoo/es5-ext/issues/201

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability none.

Weakness class

CVE-2024-27088 is classified as CWE-1333: Inefficient Regular Expression Complexity. A regular expression backtracks catastrophically on crafted input, consuming CPU out of proportion to input size.

Affected software

CVE-2024-27088 is recorded against 1 package.

  • es5-ext

Timeline and source

Published on 26 February 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)

CVE-2024-27088 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:N
CWE CWE-1333
Public Exploit ⚠️ Yes
Source OSV
Published 2024-02-26
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
es5-ext — —

Similar Threats

Exploit Protection

Are you running es5-ext?

CVE-2024-27088 carries CVSS 2.0 Low rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

Check My Site For CVE-2024-27088 →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.