# CVE-2013-4409: PYSEC-2026-524 - ReviewBoard and Djblets library are vulnerable to code execution

Source: https://junglewise.ai/threats/cve-2013-4409-reviewboard-and-djblets-library-are-vulnerable-to-code-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-29  
License: CC BY 4.0 with a link back

CVE-2013-4409 · Severity: low · CVSS 3.1 · Published 2026-06-29

ReviewBoard and Djblets library are vulnerable to code execution

Technologies: [djblets (PyPI)](https://junglewise.ai/threats/technologies/djblets). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2013-4409 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2013-4409 being exploited in the wild.

**How severe is CVE-2013-4409?** Low severity, with a CVSS score of 3.1, published 29 June 2026.

**Which products and versions are affected?** djblets (PyPI) ECOSYSTEM:introduced=0,fixed=0.6.30, ECOSYSTEM:introduced=0,fixed=0.7.21; reviewboard (PyPI) ECOSYSTEM:introduced=0,fixed=1.7.15.

**Is there a fix for CVE-2013-4409?** Yes. djblets (PyPI): upgrade to 0.6.30, 0.7.21 or later; reviewboard (PyPI): upgrade to 1.7.15 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2013-4409?** Check whether you run djblets (PyPI) or reviewboard (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- djblets (PyPI): upgrade to 0.6.30, 0.7.21 or later

  ```sh
  pip install "djblets>=0.7.21"
  ```

- reviewboard (PyPI): upgrade to 1.7.15 or later

  ```sh
  pip install "reviewboard>=1.7.15"
  ```


## Affected products

- djblets (PyPI) ECOSYSTEM:introduced=0,fixed=0.6.30, ECOSYSTEM:introduced=0,fixed=0.7.21
- reviewboard (PyPI) ECOSYSTEM:introduced=0,fixed=1.7.15

## Identifiers

- CVE-2013-4409
- GHSA-58h8-44mg-r43x
- PYSEC-2019-175
- PYSEC-2026-524

## Related threats

- [PYSEC-2026-913 - Review Board Cross-site scripting (XSS) vulnerability in the reviews dropdown](https://junglewise.ai/threats/cve-2013-2209-review-board-cross-site-scripting-xss-vulnerability-in-the-reviews)
- [Djiblets Cross-site scripting Vulnerability via JSON Objects](https://junglewise.ai/threats/cve-2014-3994-djiblets-cross-site-scripting-vulnerability-via-json-objects)
- [Djblets Cross-site scripting Vulnerability](https://junglewise.ai/threats/cve-2014-3995-djblets-cross-site-scripting-vulnerability)