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  4. CVE 2026 61503 rejetto hfs 321 username enumeration via login
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Back to active CVEs
Medium · CVSS 6.9CVE-2026-61503

Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences

Answer in brief

CVE-2026-61503 records a Medium severity (CVSS 6.9) vulnerability in Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences. The current sources do not mark it as known exploited. The current feed maps rejetto/hfs (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 13, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Jul 13, 2026Material review Oct 1, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps rejetto/hfs (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
rejetto/hfsgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for rejetto/hfs.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Jul 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jul 13, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

Rejetto HFS 3.0.0 through 3.2.0 returns observably different responses from its login endpoint depending on whether the submitted username exists. A remote unauthenticated attacker can use this to confirm valid account names, including the default admin account, facilitating password-guessing and session-forgery attacks.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Zod 4.6.5 Uncontrolled Resource Consumption via Array ValidationSame generic ecosystem
  • Wormhole.app SSRFSame generic ecosystem
  • Authenticated OS Command Injection in TL-WR841N IPv6 WAN ConfigurationSame generic ecosystem
  • Unauthenticated Remote Code Execution via MacTool Command Injection in TP-Link Tapo C120 & C200Same generic ecosystem
  • Cadmos LTI exposure of sensitive information via debug modeSame generic ecosystem
  • Joyland AI hard-coded credentials for push notificationsSame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-204
Source
CVE List V5
Source checked
Oct 1, 2026
References
2 linked sources
Open source record