Patch Forecast
Amber warning
Patch this week.

CVE-2026-105638

Plane is an open-source project management tool

Risk score
66/100
CVSS
9.1 v3.1
Exploit chance (30 days)
0.4%
Published
5 Oct 2026

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What to know

What it is
Plane is an open-source project management tool. Prior to 1.4.0, Plane's magic-code email login uses a six-digit numeric OTP with approximately 20 bits of entropy. The verifier has no per-code failed-attempt counter, and an incorrect code does not increment a counter, invalidate the Redis entry, or lock the email addr…
Affected
See advisory
Fix
Upgrade the product to 1.4.0 or later.
Exploitation
No known exploitation

Why it is Amber

  • CVSS 9.1 critical
  • Remotely exploitable without logging in

References

Original description

Plane is an open-source project management tool. Prior to 1.4.0, Plane's magic-code email login uses a six-digit numeric OTP with approximately 20 bits of entropy. The verifier has no per-code failed-attempt counter, and an incorrect code does not increment a counter, invalidate the Redis entry, or lock the email address. The verifier extends django.views.View rather than DRF's APIView, so the configured AnonRateThrottle limit does not apply. The middleware stack also contains no Django-level rate limiter such as django-ratelimit, django-axes, or an IP-throttling middleware. This vulnerability is fixed in 1.4.0.

Last activity 5 Oct 2026. Patch Forecast updates every hour.