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Fencer Vulns
critical 9.8

CVE-2021-32090 json

Command injection in LocalStack

published 2021-05-07 5 y ago modified 2026-06-17 4 mo ago also GHSA-hpr6-f4vq-mxch , PYSEC-2021-101 , EUVD-2021-0113

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The dashboard component of StackLift LocalStack 0.12.6 allows attackers to inject arbitrary shell commands via the functionName parameter.

Patch / fix

  • pypi localstack 0.12.6.1, 0.12.10

Exploit prediction

2.11% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.sonarsource.com https://blog.sonarsource.com/hack-the-stack-with-localstack referenced PoC, tagged "exploit" by a source, unverified
  • portswigger.net https://portswigger.net/daily-swig/localstack-zero-day-vulnerabilities-chained-to-achieve-remote-takeover-of-local-instances referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi localstack
<0.12.10
<0.12.6.1
0.12.10
0.12.6.1

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-77 Improper Neutralization of Special Elements used in a Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.