busy Callback app.js redirect
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-601.
Summary
A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | busy | 2.5.0; 2.5.1; 2.5.2; 2.5.3; 2.5.4; 2.5.5 | — | No fix listed | CNA |
- busy Vendor— Affected 2.5.0; 2.5.1; 2.5.2; 2.5.3; 2.5.4; 2.5.5 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2709
- 2026-10-03 Alias added: GHSA-pc7g-8v63-q7v6
References
Sources
- CVE-2026-2709 · CVE Program
- CVE-2026-2709 · NVD
- FIRST EPSS
- GHSA-pc7g-8v63-q7v6 · GitHub Advisory Database · CC BY 4.0
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