CVE-2026-30880
baserCMS installer OS command injection enables RCE (pre-5.2.3)
Is CVE-2026-30880 being exploited?
Not confirmed. CVE-2026-30880 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 2.0% probability of exploitation in the next 30 days.
How severe is CVE-2026-30880?
CVE-2026-30880 is rated Critical with a CVSS score of 9.2. 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-2026-30880?
Yes. A fix has been recorded for CVE-2026-30880. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-30880 affect?
CVE-2026-30880 affects baserCMS. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-30880?
Patch to 5.2.3+ immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via installer; attacker can execute OS commands on server with web privileges.
Immediate action required
- affected< 5.2.3
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.