CVE-2026-61639
Zip path-traversal in Wallos allows writing a webshell via restore endpoint.
Is CVE-2026-61639 being exploited?
Not confirmed. CVE-2026-61639 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 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-61639?
CVE-2026-61639 is rated High with a CVSS score of 8.5. 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-2026-61639?
Yes. A fix has been recorded for CVE-2026-61639. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-61639 affect?
CVE-2026-61639 affects Wallos (self-hosted) versions prior to 4.9.6, Instances exposing /endpoints/db/restore.php. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-61639?
Upgrade to Wallos v4.9.6, block/disable restore endpoint, scan webroot for shells.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution: crafted ZIP uploaded to /endpoints/db/restore.php can extract a path-traversal entry and drop a webshell in webroot.
Immediate action required
- affected< 4.9.6
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.