CVE-2021-32700

Name: CVE-2021-32700
Creator: NVD / NIST
Published: 2021-06-22T20:15:08.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2021-32700 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. Ballerina is an open source programming language and platform for cloud application programmers. Ballerina versions 1.2.x and SL releases up to alpha 3 have a potential for a supply chain attack via MiTM against users. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

Ballerina is an open source programming language and platform for cloud application programmers. Ballerina versions 1.2.x and SL releases up to alpha 3 have a potential for a supply chain attack via MiTM against users. Http connections did not make use of TLS and certificate checking was ignored. The vulnerability allows an attacker to substitute or modify packages retrieved from BC thus allowing to inject malicious code into ballerina executables. This has been patched in Ballerina 1.2.14 and Ballerina SwanLake alpha4.

Metrics

CVSS 3.1

7.4/10

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

EPSS Probability

0.58%

43.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Ballerina	Ballerina	< 1.2.14
Ballerina	Swan Lake	alpha1
Ballerina	Swan Lake	alpha2
Ballerina	Swan Lake	alpha3

References

https://github.com/ballerina-platform/ballerina-lang/commit/4609ffee1744ecd16aac09303b1783bf0a525816Patch, Third Party Advisory
https://github.com/ballerina-platform/ballerina-lang/security/advisories/GHSA-f5qg-fqrw-v5wwThird Party Advisory
https://github.com/ballerina-platform/ballerina-lang/commit/4609ffee1744ecd16aac09303b1783bf0a525816Patch, Third Party Advisory
https://github.com/ballerina-platform/ballerina-lang/security/advisories/GHSA-f5qg-fqrw-v5wwThird Party Advisory

Timeline

Published: Jun 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32700?

How severe is CVE-2021-32700?

CVE-2021-32700 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32700?

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-2021-32700?

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

Scan your code now

Source: NVD / NIST