CVE-2026-62860
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
Picsou is a self-hosted personal finance dashboard. In the affected login implementation, the /api/auth/login endpoint reveals whether a username exists through a timing discrepancy: AuthController.login() throws BadCredentialsException immediately for an unknown username, before passwordEncoder.matches(...), whereas an existing username with an incorrect password incurs the bcrypt comparison cost. Both cases return the same generic HTTP 401 response, but repeated latency measurements disclose valid usernames without credentials. This issue is fixed in release 1.0.8.
Risk Assessment
An attacker can enumerate valid usernames, facilitating credential stuffing or brute-force attacks. Rate limiting, a small user population, and local-network-only deployments limit practical exposure.
Recommendation
Update Picsou to version 1.0.8 or later. Maintain login rate limiting and restrict application access to the local network.
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Original NVD description (English source)
Picsou is a self-hosted personal finance dashboard. In the affected login implementation, the `/api/auth/login` endpoint reveals whether a username exists through a timing discrepancy. In `backend/src/main/java/com/picsou/controller/AuthController.java`, `AuthController.login()` throws `BadCredentialsException` immediately for an unknown username, before `passwordEncoder.matches(...)`, whereas an existing username with an incorrect password incurs the `bcrypt` comparison cost. Both cases return the same generic `HTTP 401` response, but repeated latency measurements disclose valid usernames without credentials. Login rate limiting, a small user population, and deployments inaccessible from outside the local network limit practical exposure; the weakness does not itself read or modify account data, though enumerated usernames can assist credential stuffing or brute-force attacks. This issue is fixed in repository release 1.0.8.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS