CVE-2026-33195
Path traversal in Rails Active Storage DiskService allows file access via blob keys.
Is CVE-2026-33195 being exploited?
Not confirmed. CVE-2026-33195 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 0.57% probability of exploitation in the next 30 days.
How severe is CVE-2026-33195?
CVE-2026-33195 is rated High with a CVSS score of 8.0. 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-2026-33195?
Yes. A fix has been recorded for CVE-2026-33195. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33195 affect?
CVE-2026-33195 affects Ruby on Rails Active Storage DiskService (DiskService#path_for). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33195?
Upgrade Rails to patched versions (8.1.2.1, 8.0.4.1, 7.2.3.1) or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary server file read/write/delete via crafted blob keys using path traversal.
Patch when possible
- affected>= 8.1.0.beta1 and < 8.1.2.1
- affected>= 8.0.0.beta1 and < 8.0.4.1
- affected< 7.2.3.1
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.