CVE-2026-33054
Path traversal in Mesop <=1.2.2 allows disk file access via UI stream.
Is CVE-2026-33054 being exploited?
Not confirmed. CVE-2026-33054 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 0.71% probability of exploitation in the next 30 days.
How severe is CVE-2026-33054?
CVE-2026-33054 is rated Critical with a CVSS score of 10.0. 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-2026-33054?
Yes. A fix has been recorded for CVE-2026-33054. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33054 affect?
CVE-2026-33054 affects Mesop <= 1.2.2 (FileStateSessionBackend). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33054?
Upgrade to Mesop 1.2.3
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary disk read/write via untrusted state_token; DoS and resource manipulation via FileStateSessionBackend.
Patch when possible
- affected< 1.2.3
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.