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Fencer Vulns
critical 9.8

CVE-2020-7611 json

Micronaut's HTTP client is vulnerable to HTTP Request Header Injection

published 2020-03-30 6 y ago modified 2026-07-08 4 mo ago also GHSA-694p-xrhg-x3wm , EUVD-2020-0334

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

All versions of io.micronaut:micronaut-http-client before 1.2.11 and all versions from 1.3.0 before 1.3.2 are vulnerable to HTTP Request Header Injection due to not validating request headers passed to the client.

Patch / fix

  • maven io.micronaut:micronaut-http-client 1.2.11, 1.3.2
  • objectcomputing micronaut 1.2.11, 1.3.2

Exploit prediction

1.81% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-694p-xrhg-x3wm referenced PoC, tagged "exploit" by a source, unverified
  • snyk.io https://snyk.io/vuln/SNYK-JAVA-IOMICRONAUT-561342 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 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
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
maven io.micronaut:micronaut-http-client
<1.2.11
>=1.3.0, <1.3.2
1.2.11
1.3.2

Affected products

  • n/a io.micronaut:micronaut-http-client

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests

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.