CVE-2026-77143
Missing server-side ownership check allows unauthorized edits to public forum topics.
Is CVE-2026-77143 being exploited?
Not confirmed. CVE-2026-77143 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 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-77143?
CVE-2026-77143 is rated High. 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-2026-77143?
Yes. A fix has been recorded for CVE-2026-77143. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-77143 affect?
CVE-2026-77143 affects Custom web forum applications with frontend topic editing, Web apps lacking server-side ownership verification, Public forums exposing topic identifiers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-77143?
Implement server-side ownership checks, validate requests, and restrict/update endpoints.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can overwrite any forum topic by submitting direct update requests, enabling content tampering and impersonation.
Immediate action required
- affected>= 6.0.0 and < 6.2.4
- affected>= 5.0.0 and < 5.0.1
- affected< 4.0.4
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.