Regex compilation failed for signature 13003

  • Resolved bntabor

    (@bntabor)


    2 years, 7 months ago

    Hello, I’m getting these two errors in my WordFence scan log file, and Sever state / vulnerability scans keep failing.
    Can you point me in the right direction to fix these problems?

    1. Regex compilation failed for signature 13003

    2. Compilation failed: unrecognized character follows \ at offset 25 (2) File: /home/……./wp-content/plugins/wordfence/lib/wordfenceScanner.php Line: 101

    Thanks!

Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Support wfpeter

    (@wfpeter)

    Hi @bntabor, thanks for reaching out!

    I’ve not seen any recent cases of this message appearing for customers, but a few years ago messages similar to this were related to an outdated version of PHP and/or server software.

    To help diagnose the issue and get me some additional details:

    • Stop the existing scan if it is still running (The “Start New Scan” button turns into a “Stop” button while the scan is running).
    • Go to your Wordfence > Scan > Manage Scan and locate the “Performance Options” section. Set “Maximum execution time for each scan stage” to 20.
    • Click to “Save Changes”.
    • Go to the Tools > Diagnostics page.
    • In the “Debugging Options” section check the circle “Enable debugging mode”.
    • If “Start scan remotely” is checked, uncheck this option.
    • Click to “Save Changes”.
    • Start a new scan on the Scan page.
    • If the scan fails again, copy the last 20 lines or so from the Log (click the “Show Log” link) once the scan finishes and paste them in the post.

    Can you also send a diagnostic report to wftest @ wordfence . com? You can find the link to do so at the top of the Wordfence > Tools > Diagnostics page. Then click on “Send Report by Email”. Please add your forum username where indicated and respond here after you have sent it.

    NOTE: It should look as follows – Screenshot of Tools > Diagnostic > Send by Email

    Thanks,

    Peter.

    Thread Starter bntabor

    (@bntabor)

    Hello @wfpeter, Thank You for replying.
    I’m using php v. 8.0, and also Litespeed server, version unknown.
    Maximum execution time was set to 20 already.
    I’ll run another scan, if I have any further problems, i’ll email the log file.
    Thanks for your help!

Viewing 2 replies - 1 through 2 (of 2 total)
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