Kalles WordPress theme: Unauthenticated PHP object injection
Summary
The Kalles WordPress theme up to and including version 1.1.7.1 contains an unauthenticated PHP object injection flaw (CWE-502). A remote attacker can send crafted data to the site without logging in, which may allow manipulation of server-side processing and harmful actions on the server. Real-world impact depends on the plugins installed on the site, because object injection needs usable classes in the code base; no confirmed gadget chain for this theme is known.
Affected
- Kalles WordPress theme up to and including 1.1.7.1
- Related but separate: Kalles Addons plugin up to and including 1.0.6 (CVE not covered by this entry)
Fixed in
Unknown. No vendor fix has been confirmed.
Workaround
- Check the installed theme version (Appearance > Themes or style.css header).
- Remove or deactivate the theme if it is not essential.
- Place a web application firewall in front of the site; validate any rule set before relying on it, as no CVE-specific rules are confirmed.
- Keep WordPress core, WooCommerce and all plugins up to date.
Exploitation
- CISA SSVC: Exploitation none, Automatable yes, Technical Impact total.
- Not listed in CISA KEV.
- No public proof of concept found in research; this does not prove none exists.
- EPSS 0.00375 (low predicted exploitation probability).
- Patchstack rates it high priority and expects exploitation.
Our recommendation
- Inventory all WordPress sites and check for Kalles and Kalles Addons, including the version.
- Treat sites with Kalles 1.1.7.1 or older as exposed, prioritising internet-facing sites.
- Contact The4 or the seller for a fixed release; until a fix is confirmed, consider removing the theme or applying compensating controls.
- Do not install the theme from unofficial download sites.
- Monitor the NVD entry and the Patchstack page for updates.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Patchstack advisory patchstack.com
- OpenCVE CVE-2026-62076 app.opencve.io
- Vulners RAPID7 entry (EPSS) vulners.com
- HOL Guard CVE entry hol.org
- Strix CVE entry www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 19:33.
Original description (NVD)
Unauthenticated PHP Object Injection in Kalles <= 1.1.7.1 versions.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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