Rebuild Login Endpoint login improper authentication
Priority HIGH 70CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
A vulnerability was identified in Rebuild up to 4.4.7/4.5.0-beta5. This affects an unknown part of the file /user/login of the component Login Endpoint. The manipulation leads to improper authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| — | Rebuild | 4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5; 4.4.6; 4.4.7; 4.5.0-beta1; 4.5.0-beta2; 4.5.0-beta3; 4.5.0-beta4; 4.5.0-beta5 | — | No fix listed | CNA |
- Rebuild Vendor— Affected 4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5; 4.4.6; 4.4.7; 4.5.0-beta1; 4.5.0-beta2; 4.5.0-beta3; 4.5.0-beta4; 4.5.0-beta5 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rebuild:rebuild:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:rebuild:rebuild:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-102248
- 2026-10-03 Alias added: GHSA-cc3x-v8vh-qhvv
References
Sources
- CVE-2026-102248 · CVE Program
- CVE-2026-102248 · NVD
- FIRST EPSS
- GHSA-cc3x-v8vh-qhvv · GitHub Advisory Database · CC BY 4.0
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