CVE-2026-54159
Unauthenticated PHP object injection in PrestaShop ps_facetedsearch allows RCE.
Is CVE-2026-54159 being exploited?
Not confirmed. CVE-2026-54159 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 0.75% probability of exploitation in the next 30 days.
How severe is CVE-2026-54159?
CVE-2026-54159 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-2026-54159?
Yes. A fix has been recorded for CVE-2026-54159. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54159 affect?
CVE-2026-54159 affects PrestaShop ps_facetedsearch module v3.0.0–4.0.3, PrestaShop e‑commerce sites using the module. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54159?
Upgrade ps_facetedsearch to ≥4.0.4, scan/clean webroot and restore from backups.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can inject a serialized PHP object, cause arbitrary PHP file write in module dir, and achieve remote code execution via a webshell.
Immediate action required
- affected>= 3.0.0 and < 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.