CVE-2025-5802Disclosure

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

The self-registration flow accepts user-supplied input for usernames without adequately preventing the disclosure of username existence. When a user attempts to register with an existing username, the system responds with an error message that explicitly indicates the username is already in use. This behavior allows an attacker to discover valid usernames within the system. The discovery of valid usernames can facilitate subsequent attacks such as brute force, social engineering, and targeted phishing campaigns.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-203

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-15: 1Technical Details · 2026-09-15: 109-15
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2025-5802 The self-registration flow accepts user-supplied input for usernames without adequately preventing the disclosure of username existence. When a user attempts to registe… https://www.cve.org/CVERecord?id=CVE-2025-5802

    Post summary

    The tweet discloses CVE‑2025-5802 as an information‑disclosure vulnerability where the self‑registration flow fails to prevent username enumeration via user‑supplied input.

    000001.5K
    58.1K followersView on X

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