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CVE-2026-121450

7.7 highEPSS 0.3%

High (7.7). EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
CFNext before 3.1.0 contains a weak cryptographic derivation vulnerability that allows subscription link holders to recover the admin password because the subscription UUID is an MD5 of the password with a fixed public salt. Attackers can brute-force the password offline without rate limiting, log into the admin panel, and read stored Trojan, Clash, Telegram and Cloudflare API secrets.

Severity

CVSS 4.0

7.7 high
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 18th percentile. Scored 2026-11-05. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-760 Use of a One-Way Hash with a Predictable Salt
OWASP Top 10
A04:2025 Cryptographic Failures
Published
Modified
Record from
the NVD, synced

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Versions

From the CNA's record in the CVE List.

ProductAffected
PAICNI CFNextbefore 3.1.0

References

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