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Fencer Vulns
critical 9.8

CVE-2021-1627 json

MuleSoft is aware of a Server Side Request Forgery vulnerability affecting certain versions of a Mule runtime component that may affect bot…

published 2021-03-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7094

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

MuleSoft is aware of a Server Side Request Forgery vulnerability affecting certain versions of a Mule runtime component that may affect both CloudHub and on-premise customers. This affects: Mule 3.8.x,3.9.x,4.x runtime released before February 2, 2021.

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

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 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a Mulesoft

Classification

Weakness
  • CWE-918 Server-Side Request Forgery

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.