CVE-2024-27088

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

es5-ext contains ECMAScript 5 extensions. Passing functions with very long names or complex default argument names into `function#copy` or `function#toStringTokens` may cause the script to stall. The vulnerability is patched in v0.10.63.

Affected

medikoo · es5-ext

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 GITHUB

0.0 NONECVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:N

EPSS

0.53% chance of exploitation in the next 30 days, 44th percentile

Published

2024-02-26

Updated

2024-08-09

Proof-of-concept exploits (2)

• medikoo/es5-ext/issues/201179★ · 2025-05-09
• 200101WhoAmI/CVE-2024-270880★ · 2024-08-21

Security advisories

• medikoo/es5-ext/security/advisories/GHSA-4gmj-3p3h-gm8h
• advisories/GHSA-4gmj-3p3h-gm8h

References

• CVE Record
• NVD entry

Related

• CVE-2023-43646
• CVE-2023-45827
• CVE-2023-50245