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PatchSiren cyber security CVE debrief

CVE-2026-39578 Elated-Themes CVE debrief

CVE-2026-39578 is a medium-severity vulnerability in the Valiance theme, affecting versions <= 1.2. This vulnerability allows unauthenticated PHP object injection, which could potentially lead to security issues. The CVSS score for this vulnerability is 5.5. The vulnerability was published on June 17, 2026, at 13:20:21 UTC and modified at 14:44:26 UTC on the same day. Users of the Valiance theme should take necessary precautions to mitigate this vulnerability.

Vendor
Elated-Themes
Product
Valiance
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

Users of the Valiance theme, version 1.2 or earlier, should be aware of this vulnerability and take necessary steps to mitigate it. This includes updating to a patched version if available and implementing additional security measures to prevent exploitation.

Technical summary

CVE-2026-39578 is a PHP object injection vulnerability in the Valiance theme, affecting versions <= 1.2. The vulnerability has a CVSS score of 5.5 and is classified as CWE-502. The vulnerability allows unauthenticated attackers to inject PHP objects, potentially leading to security issues. The attack vector is network-based, and the vulnerability requires high privileges to exploit.

Defensive priority

Medium

Recommended defensive actions

  • Update the Valiance theme to a patched version if available.
  • Implement additional security measures to prevent exploitation, such as restricting access to sensitive areas of the website.
  • Monitor website activity for suspicious behavior.
  • Consider using a web application firewall (WAF) to detect and prevent attacks.
  • Keep software and plugins up-to-date.
  • Use secure protocols for data transmission.
  • Regularly back up website data.

Evidence notes

The vulnerability was reported by Patchstack and is listed in the NVD database. The CVE record and NVD detail pages provide additional information about the vulnerability.

Official resources

public