CVE-2026-102248: Rebuild Login Endpoint login improper authentication

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-29 · updated 2026-09-29
Weakness: CWE-287

Description

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.

Affected products

Rebuild: 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.4.5 (+7)

References

https://github.com/ASantsSec/CVE/issues/25
https://vuldb.com/cve/CVE-2026-102248
https://vuldb.com/submit/933708
https://vuldb.com/vuln/411150
https://vuldb.com/vuln/411150/cti

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