CVE-2026-31283Network attack vector

Email bombing via repeated password-reset requests

Published Apr 13, 2026 · Updated Apr 13, 2026

Email bombing in Totara LMS 19.1.5 and earlier allows remote attackers to flood a target through repeated password-reset requests. The reported forgot-password API accepts repeated requests for the same target address without per-address throttling and sends reset messages. Totara disputes the claim because the default pwresettime is 30 minutes and PWRESET_STATUS_ALREADYSENT blocks further messages for that address.

CVSS severity9.8
Critical
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Email bombing in Totara LMS 19.1.5 and earlier allows remote attackers to flood a target through repeated password-reset requests. The reported forgot-password API accepts repeated requests for the same target address without per-address throttling and sends reset messages. Totara disputes the claim because the default pwresettime is 30 minutes and PWRESET_STATUS_ALREADYSENT blocks further messages for that address.

The record

CVE
CVE-2026-31283
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, T1498
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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