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CVE-2026-6621
HIGH7.3
Description
A vulnerability was determined in 1024bit extend-deep up to 0.1.6. The impacted element is an unknown function of the file index.js. This manipulation of the argument __proto__ causes improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The code repository of the project has not been active for many years.
CVE Details
CVSS v3.1 Score7.3
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published4/20/2026
Last Modified4/22/2026
Sourcenvd
Honeypot Sightings0
Weaknesses (CWE)
CWE-94CWE-1321
References
https://github.com/sudo-secure/security-research/blob/main/extend-deep/prototype-pollution/PoC.md(cna@vuldb.com)
https://vuldb.com/submit/792387(cna@vuldb.com)
https://vuldb.com/vuln/358256(cna@vuldb.com)
https://vuldb.com/vuln/358256/cti(cna@vuldb.com)
IOC Correlations
No correlations recorded
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