# Vikunja: Plaintext storage of password-reset/email-confirm tokens in database enables account takeover on DB read access

Advisory record · `GHSA-r6w9-259g-gwrv`

- **Identifiers:** `GHSA-r6w9-259g-gwrv` · `CVE-2026-62376` · `GO-2026-6748`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-312](https://cwe.mitre.org/data/definitions/312.html) · [CWE-916](https://cwe.mitre.org/data/definitions/916.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [Weak cryptography or TLS](https://agentprime.io/advisories/tag/weak-crypto.md)
- **Published:** 9 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 9 Oct 2026, 20:49 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `code.vikunja.io/api` (Go): affected `<2.4.0`; fixed in `2.4.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Vikunja (Go package code.vikunja.io/api, versions before 2.4.0) stores password-reset, email-confirmation and account-deletion tokens in plaintext in the database. An attacker who can read the database, for example through a leaked backup, misconfigured storage or SQL injection, can use pending tokens to take over user accounts, including admin accounts, without knowing passwords. Upgrade to version 2.4.0 or later.

Written 1 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0028, the 20th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:11 UTC: First seen by agentprime
- 31 Oct 2026, 14:11 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-r6w9-259g-gwrv)

## Sources

- [GitHub Advisory Database: GHSA-r6w9-259g-gwrv](https://github.com/advisories/GHSA-r6w9-259g-gwrv)
- [OSV: GHSA-r6w9-259g-gwrv](https://osv.dev/vulnerability/GHSA-r6w9-259g-gwrv)
- <https://github.com/go-vikunja/vikunja/security/advisories/GHSA-r6w9-259g-gwrv>
- <https://github.com/go-vikunja/vikunja/commit/00fd2c6155c01faae99be4226b931d8091fd6323>
- <https://github.com/go-vikunja/vikunja/commit/3a0ea15d8c18ff960bc98ae39950fa7a14b0af7d>
- <https://github.com/go-vikunja/vikunja/commit/e31ea2de5040fa63bc97cf4df63bafed3bd9ad85>
- <https://github.com/go-vikunja/vikunja>
- <https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-r6w9-259g-gwrv>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-r6w9-259g-gwrv/>. Everything for agents: <https://agentprime.io/llms.txt>.