high severityConfidence mediumHistorical record

osTicket generates predictable API keys via MD5 hashing

osTicket generates predictable API keys via MD5 hashing. Upgrade and rotate keys.

Also tracked as CVE-2026-38447

First observed

Aug 4, 2026

Last observed

Aug 4, 2026

Last reviewed

Sep 20, 2026

Tracking ended

Aug 4, 2026

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Uncertainty and limitations

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Confirm exact fixed version against the live advisory.

  • Campaign tracks CVE-2026-38447 only.
  • HOL blog is operator guidance.

Timeline

Reviewed events, oldest first, each tied to a verified source.

  1. Disclosure

    CVE-2026-38447 osTicket predictable API keys disclosed.

  2. Update

    HOL Guard published operator coverage.

Publication clock: 1147.2 hours from reviewed disclosure timestamp to HOL publication; 24-hour high target; historical backfill outside target.

Guard coverage and non-coverage

What Guard's reviewed coverage assertions do and do not claim for this campaign.

No Guard coverage mapping is published for this record.

Defensive policy guidance

Reviewed starting points for defending against this campaign's artifact classes.

No campaign-specific policy guidance is published.

Sources

Every claim on this record is traceable to the sources below.

Reviewed in full by HOL Guard Security Publishing.

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Record HGTC-2026-D463E1BF.