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GHSA-q76j-gcg9-vxc6
No affected components available
Hugo's default code-block renderer wrote the Markdown code-fence language / info-string into the <code class="language-…" data-lang="…"> wrapper without HTML escaping. A fence info-string containing a quote and a <script> payload breaks out of the attribute and injects a live script element.
This is not an issue if you fully trust every file under /content and every content adapter you load.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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