by Kastro
Paper/Archive/CVE-2026-127079

CVE-2026-127079

OpsTree Solutions BuildPiper — OpsTree BuildPiper before 2.7.0 OTP Brute Force via password_reset/check_otp

CVSS 9.1
critical.is priorityof 100
27
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

OpsTree BuildPiper before 2.7.0 lacks rate limiting on password-reset OTP verification, allowing unauthenticated attackers to brute force 6-digit OTPs. Attackers can initiate a reset and submit unthrottled guesses to the check_otp endpoint, resetting the target's password and taking over the account.

Affected

ProductAffectedFixed inSource
BuildPiper< 2.7.02.7.0CNA

Scores by source

VulnCheck (CNA)9.1CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
VulnCheck (CNA)7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

exploitgist.github.com/neelkotnis/c3c9d02c324a73937ca4db81f223435erefbuildpiper.iowriteupvulncheck.com/advisories/opstree-buildpiper-before-2.7.0-otp-brute-force-via-password-reset-check-otp