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yaml.parser.ParserError: while parsing a block mapping expected <block end>, but found ‘<scalar>’

2 min readAug 13, 2024

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I got this error:

yaml.parser.ParserError: while parsing a block mapping expected <block end>, but found ‘<scalar>’

when I did this:

Short_Description: >
An attacker is able to input a manipulated string that executes an operating
system command on the application or web server.

And this:

Short_Description: >
An attacker is able to input a manipulated string that executes an operating
system command on the application or web server.

Instead of this:

Short_Description: >
An attacker is able to input a manipulated string that executes an operating
system command on the application or web server.

In other words, it was a problem with my indentation for a multi-line block as indicated by the greater than symbol >.

Picky, picky.

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Teri Radichel | © 2nd Sight Lab 2023

About Teri Radichel:
~~~~~~~~~~~~~~~~~~~~
⭐️ Author
: Cybersecurity Books
⭐️ Presentations
: Presentations by Teri Radichel
⭐️ Recognition: SANS Award, AWS Security Hero, IANS Faculty
⭐️ Certifications: SANS ~ GSE 240
⭐️ Education: BA Business, Master of Software Engineering, Master of…

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Teri Radichel
Teri Radichel

Written by Teri Radichel⁠

CEO 2nd Sight Lab | Pentesting | Research | AWS Security Hero | Masters of Infosec & Masters Software Engineering | GSE | IANS | SANS Difference Makers Award

Bugs That Bite
Bugs That Bite

Published in Bugs That Bite

Helping make the world a better place, one error message at a time.