[Verse 1] October twenty-ninth, the scanner's humming low, Two old engines sputtering, about to overflow, DedeCMS limping since the two-thousand-whenever, YiShaAdmin's back door never bolted, never clever, Nine-point-eight and nine-point-one, the numbers don't lie, Unauthenticated means nobody has to ask why, No login, no password, no knock upon the gate, Just a crafted request and the whole house folds like a plate. [Chorus] CVE twenty twenty-one, forty-eight-oh-sixteen, DedeCMS burning, Referer header unclean, CVE twenty twenty-two, fifty-one-oh-two-two, YiShaAdmin's hallway got a hole clean through, Nine-point-eight, nine-point-one, patch before the dawn, Critical's the color when the welcome mat is gone. [Verse 2] Picture ShowMsg like a parrot on the wall, Repeats what the Referer header says, repeats it all, But DedeTemplate strings don't just echo, they obey, So the attacker writes a script in the field, then walks away, No name, no key, no cookie in the door, Just a header stuffed with code the server can't ignore, It gets included, interpreted, run like gospel truth, Five-eight-one-beta still carrying that leaky roof. [Verse 3] Now meet the File endpoint in YiShaAdmin's hall, DownloadFile's the clerk who answers every single call, Ask for a report, it hands you what you need, But never checks the path you're asking it to read, Dot-dot-slash enough times, you're outside the folder maze, Reading config secrets, deleting files for days, Versions two-two through three-one, open like a vault, Commit zero-two-five-b-zero-six-two locks the fault. [Verse 4] Somewhere a sysadmin sleeps while the logs pile high, Requests stacking quiet, nobody asking why, A scanner finds the version, a script does all the rest, No skill required now, just a payload and a guess, The CVSS score sits there blinking critical red, But patch notes gather dust in an inbox left unread, This is how it happens, not some genius in the dark, Just an unpatched function and a cold, forgotten spark. [Chorus] CVE twenty twenty-one, forty-eight-oh-sixteen, DedeCMS burning, Referer header unclean, CVE twenty twenty-two, fifty-one-oh-two-two, YiShaAdmin's hallway got a hole clean through, Nine-point-eight, nine-point-one, patch before the dawn, Critical's the color when the welcome mat is gone. [Bridge] One's a template trusting words it should've doubted, One's a path that never got its wandering routed, Different codebases, same forgotten rule, Validate the input, treat every guest like a fool, No patch, no shield, just an open invitation, Somewhere a server's begging for an update, a vacation. [Outro] Check your CMS, check your admin door, Nine-point-eight, nine-point-one, don't leave it on the floor, October twenty-ninth, the warning's sung and clear, Patch the template, patch the path, before the storm draws near.
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