Skip to content
Fencer Intel
no cvss —

CVE-2026-127048 json

Lazy Blocks < 3.0.0 - Unauthenticated RCE

published 4h ago modified 3h ago also EUVD-2026-125988

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no EPSS score yet
public exploits
0
none known

Summary

The Custom Block Builder WordPress plugin before 3.0.0 does not properly deny unauthorised requests to its REST routes, as its permission checks return a non-error response that WordPress treats as granted, allowing unauthenticated users to execute arbitrary PHP code on the server.

Patch / fix

  • Unknown Custom Block Builder 3.0.0

Is CVE-2026-127048 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/b88c5a75-56ab-4722-8994-bbd6d97d2844/ referenced PoC, tagged "exploit" by a source, unverified

Affected products

  • Unknown Custom Block Builder

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.