CVE-2026-62860

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Cloeille/picsou-finance/commit/877ac0f7c651612e15f0dbac5de8e96d66bbcf59
https://github.com/Cloeille/picsou-finance/releases/tag/1.0.8
https://github.com/Cloeille/picsou-finance/security/advisories/GHSA-ww5m-pxgq-8qq6

Configurations

No configuration.

History

30 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 21:17

Updated : 2026-10-30 21:17

NVD link : CVE-2026-62860

Mitre link : CVE-2026-62860

CVE.ORG link : CVE-2026-62860

JSON object : View

Products Affected

No product.

CWE

CWE-208

Observable Timing Discrepancy

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