CVE-2021-37934: Due to insufficient server-side login-attempt limit enforcement, a vulnerability in /account/login in Huntflow

Q: How do I fix CVE-2021-37934?

huntflow enterprise: upgrade to 3.10.14. Exact commands for each OS are on this page.

Q: Is CVE-2021-37934 being exploited?

CVE-2021-37934 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-37934 affect?

CVE-2021-37934 affects huntflow enterprise. Severity is critical (CVSS 9.8). Due to insufficient server-side login-attempt limit enforcement, a vulnerability in /account/login in Huntflow Enterprise before 3.10.14 could allow an unauthenticated, remote user to perform multiple login attempts for brute-force password

Q: How urgent is CVE-2021-37934?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-37934 is a critical-severity flaw (CVSS 9.8) affecting huntflow enterprise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Due to insufficient server-side login-attempt limit enforcement, a vulnerability in /account/login in Huntflow Enterprise before 3.10.14 could allow an unauthenticated, remote user to perform multiple login attempts for brute-force password guessing.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Weakness	CWE-307
Published	2021-12-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: huntflow

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-12-10 17:15 UTCPublished CVE record published
2026-06-17 04:01 UTCUpdated Record last modified

huntflow huntflow enterprise UPGRADE

Affected: < 3.10.14

Fixed in: 3.10.14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy huntflow-enterprise || rpm -q huntflow-enterprise || huntflow-enterprise --version

2. UPGRADE to 3.10.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade huntflow-enterprise

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade huntflow-enterprise

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-37934?

huntflow enterprise: upgrade to 3.10.14. Exact commands for each OS are on this page.

Is CVE-2021-37934 being exploited?

CVE-2021-37934 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-37934 affect?

CVE-2021-37934 affects huntflow enterprise. Severity is critical (CVSS 9.8). Due to insufficient server-side login-attempt limit enforcement, a vulnerability in /account/login in Huntflow Enterprise before 3.10.14 could allow an unauthenticated, remote user to perform multiple login attempts for brute-force password

How urgent is CVE-2021-37934?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-37935 HIGH 7.5 UPGRADE An information disclosure vulnerability in the login page of Huntflow Enterprise before 3.10.4 could allow an
CVE-2021-37933 HIGH 7.5 UPGRADE An LDAP injection vulnerability in /account/login in Huntflow Enterprise before 3.10.6 could allow an unauthen

References

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