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Fencer Vulns
critical 9.8

CVE-2021-34084 json

OS Command Injection in s3-uploader

published 2022-06-01 4 y ago modified 2026-06-17 4 mo ago also GHSA-gwp3-f7mr-qpfv , EUVD-2022-6057

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

OS command injection vulnerability in Turistforeningen node-s3-uploader through 2.0.3 for Node.js allows attackers to execute arbitrary commands via the metadata() function.

Exploit prediction

3.07% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • advisory.checkmarx.net https://advisory.checkmarx.net/advisory/CX-2021-4776 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

Affected packages

ecosystem package affected fixed in
npm s3-uploader
<=2.0.3
no fix listed

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS 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.