What is CVE-2026-31283?

CVE-2026-31283 is a critical-severity vulnerability in N/a, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 9.8/10. Published 2026-04-13.

How severe is CVE-2026-31283?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-31283 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in N/a

CVE-2026-31283

In Totara LMS v19.1.5 and before, the forgot password API does not implement rate limiting for the target email address. which can be used for an Email Bombing attack. NOTE: the Supplier's position is that the pwresettime configuration defaults to 30 minutes, the pwresettime configuration is a hard control enforced via flag PWRESET_STATUS_ALREADYSENT, and no further password-reset email messages are sent if this flag is active for a specific email address.

EPSS: 0.004 (32.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Public proof-of-concept exploits

saykino/CVE-2026-31283

References

Frequently asked questions

What is CVE-2026-31283?: CVE-2026-31283 is a critical-severity vulnerability in N/a, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 9.8/10. Published 2026-04-13.
How severe is CVE-2026-31283?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-31283 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.