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CVE-2026-31283

9.8
Critical
EPSS 0.40%Apr 15, 2026

Forgot password API lacks rate limiting; enables email bombing.

common questions

Is CVE-2026-31283 being exploited?

Not confirmed. CVE-2026-31283 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.

How severe is CVE-2026-31283?

CVE-2026-31283 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-31283?

Not known from our data. No patch reference has been recorded for CVE-2026-31283, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.

What does CVE-2026-31283 affect?

CVE-2026-31283 affects Totara LMS <= 19.1.5. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-31283?

Implement rate limiting on forgot-password; monitor abuse; plan upgrade.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
Totara LMS <= 19.1.5
impact

Attacker floods target inbox with password-reset emails via unauthenticated requests; potential DoS and reset abuse.

action required

Patch when possible

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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