Username enumeration via divergent password-recovery errors
Published Feb 19, 2026 · Updated Feb 19, 2026
User enumeration in FormaLMS 4.1.18 and earlier allows remote attackers to identify registered usernames through the /lostpwd endpoint. The password-recovery handler returns a distinct error when a submitted username does not exist instead of producing an indistinguishable response for both account states. No authentication or user interaction is required, and the disclosed consequence is limited to learning which accounts are registered.
Summary
What happened
User enumeration in FormaLMS 4.1.18 and earlier allows remote attackers to identify registered usernames through the /lostpwd endpoint. The password-recovery handler returns a distinct error when a submitted username does not exist instead of producing an indistinguishable response for both account states. No authentication or user interaction is required, and the disclosed consequence is limited to learning which accounts are registered.
The record
- CVE
- CVE-2026-26744
- Published
- Feb 19, 2026
- Updated
- Feb 19, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-204
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 19, 2026CVE publishedPublication date reported by the CVE source.
- Feb 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo