Quick answers
- Is CVE-2026-57623 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-57623 being exploited in the wild.
- How severe is CVE-2026-57623?
- Critical severity, with a CVSS score of 9, published 2 July 2026.
- Which products and versions are affected?
- BoldGrid W3 Total Cache <= 2.9.4.
- Is there a fix for CVE-2026-57623?
- A patch was published: Fixed in version 2.10.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-57623 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-57623?
- Check whether you run BoldGrid W3 Total Cache at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
W3 Total Cache is vulnerable to unauthenticated arbitrary code execution (ACE) in versions up to and including 2.9.4. The vulnerability is classified under CWE-1284 (Improper Validation of Specified Quantity in Input), suggesting that insufficient validation of user-supplied input allows for code injection or execution. An attacker can exploit this over the network without any prior authentication or user interaction. Successful exploitation grants the attacker the ability to execute arbitrary commands with the privileges of the web server process. The issue has been addressed in version 2.10.0.
Affected products
- BoldGrid W3 Total Cache <= 2.9.4
Timeline
- 2026-04-17: disclosed: Reported by Ananda Dhakal via Patchstack
- 2026-06-29: advisory: Patchstack advisory published
- 2026-07-02: advisory: NVD published CVE-2026-57623
- patched: Fixed in version 2.10.0