serialize-javascript from 7.0.1 before 7.1.3 contains a cross-site scripting vulnerability that allows attackers to break out of HTML script elements by ending serialized function source text with an unescaped </script. Attackers controlling a function's source via a spoofed toString() can combine surrounding output delimiters and later values to inject live markup such as img onerror handlers.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70…
disclosure@vulncheck.com
https://github.com/yahoo/serialize-javascript/pull/235
disclosure@vulncheck.com
https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3
disclosure@vulncheck.com
https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/serialize-javascript-7.0.1-before-7.1.3-xs…
disclosure@vulncheck.com