CVE-2026-30849
Auth bypass in MantisBT SOAP API allows login with victim's username.
Is CVE-2026-30849 being exploited?
Not confirmed. CVE-2026-30849 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 1.5% probability of exploitation in the next 30 days.
How severe is CVE-2026-30849?
CVE-2026-30849 is rated Critical with a CVSS score of 9.3. 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-2026-30849?
Yes. A fix has been recorded for CVE-2026-30849. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-30849 affect?
CVE-2026-30849 affects MantisBT <2.28.1 on MySQL backends. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-30849?
Patch to 2.28.1+; if patching is delayed, disable SOAP API.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Login as user without password via SOAP API; execute authorized API calls and potentially access user data.
Immediate action required
- affected< 2.28.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.