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CVE-2026-54159GHSA-M5F5-28QR-9G9R

ps_facetedsearch: PHP Object Injection in faceted search cache allows unauthenticated RCE

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.0.4
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

PrestaShop ps_facetedsearch is a module that adds layered navigation filters. From 3.0.0 until 4.0.4, the ps_facetedsearch module rebuilds selected search filters from the request URL, and the value of a slider filter, price or weight, is taken from the URL without sufficient validation and stored in an internal filter-block cache where it is serialized and later read back with a raw native unserialize() in src/Filters/Block.php. By crafting that value, an unauthenticated attacker can smuggle a malicious serialized PHP object into the cache, and when it is deserialized, a gadget chain writes an arbitrary PHP file inside the modules/ps_facetedsearch/ directory, which is then used as a webshell to run commands on the server. This issue is fixed in version 4.0.4.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • PrestaShop ps_facetedsearch

    From 3.0.0 · fixed in 4.0.4

  • prestashop/ps_facetedsearchPackagist

    From 3.0.0 · fixed in 4.0.4

References 3

GitHub · PrestaShop/ps_facetedsearch