CVE-2021-4307

Name: CVE-2021-4307
Creator: NVD / NIST
Published: 2023-01-07T20:15:09.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.26%

Last modified Jun 17, 2026

CVE-2021-4307 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability was found in Yomguithereal Baobab up to 2.6.0. It has been declared as critical. EPSS estimates a 1.26% chance of exploitation in the next 30 days.

Description

A vulnerability was found in Yomguithereal Baobab up to 2.6.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack can be launched remotely. Upgrading to version 2.6.1 is able to address this issue. The patch is named c56639532a923d9a1600fb863ec7551b188b5d19. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217627.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.26%

65.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Baobab Project	Baobab	>= 2.0.0, < 2.6.1

References

https://github.com/Yomguithereal/baobab/commit/c56639532a923d9a1600fb863ec7551b188b5d19Patch
https://github.com/Yomguithereal/baobab/pull/511Exploit, Patch, Third Party Advisory
https://github.com/Yomguithereal/baobab/releases/tag/2.6.1Release Notes
https://vuldb.com/?ctiid.217627Third Party Advisory, VDB Entry
https://vuldb.com/?id.217627Third Party Advisory, VDB Entry
https://github.com/Yomguithereal/baobab/commit/c56639532a923d9a1600fb863ec7551b188b5d19Patch
https://github.com/Yomguithereal/baobab/pull/511Exploit, Patch, Third Party Advisory
https://github.com/Yomguithereal/baobab/releases/tag/2.6.1Release Notes
https://vuldb.com/?ctiid.217627Third Party Advisory, VDB Entry
https://vuldb.com/?id.217627Third Party Advisory, VDB Entry

Timeline

Published: Jan 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4307?

How severe is CVE-2021-4307?

CVE-2021-4307 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4307?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4307?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST