CVE-2025-65899: Kalmia CMS version 0.2.0 contains a user enumeration vulnerability in its authentication mechanism

Q: How do I fix CVE-2025-65899?

kalmia: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2025-65899 being exploited?

CVE-2025-65899 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-2025-65899 affect?

CVE-2025-65899 affects kalmia. Severity is medium (CVSS 5.3). Kalmia CMS version 0.2.0 contains a user enumeration vulnerability in its authentication mechanism. The application returns different error messages for invalid users (user_not_found) versus valid users with incorrect passwords (invalid_pas

Q: How urgent is CVE-2025-65899?

Priority 36/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2025-65899 is a medium-severity flaw (CVSS 5.3) affecting kalmia. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kalmia CMS version 0.2.0 contains a user enumeration vulnerability in its authentication mechanism. The application returns different error messages for invalid users (user_not_found) versus valid users with incorrect passwords (invalid_password). This observable response discrepancy allows unauthenticated attackers to enumerate valid usernames on the system.

Why this priority

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

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-204
Published	2025-12-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: difuse

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

Am I affected?

Timeline

2025-12-04 22:15 UTCPublished CVE record published
2026-06-17 09:56 UTCUpdated Record last modified

difuse kalmia DOWNGRADE

Affected: 0.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.0

1. Check installed version

npm ls kalmia

2. No fixed release: DOWNGRADE to a release before 0.2.0

npm view kalmia versions npm install kalmia@"<0.2.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-65899?

kalmia: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-65899 being exploited?

CVE-2025-65899 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-2025-65899 affect?

CVE-2025-65899 affects kalmia. Severity is medium (CVSS 5.3). Kalmia CMS version 0.2.0 contains a user enumeration vulnerability in its authentication mechanism. The application returns different error messages for invalid users (user_not_found) versus valid users with incorrect passwords (invalid_pas

How urgent is CVE-2025-65899?

Priority 36/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-65900 MEDIUM 6.5 DOWNGRADE Kalmia CMS version 0.2.0 contains an Incorrect Access Control vulnerability in the /kal-api/auth/users API end

References

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