PT-2026-48950 · Npm+1 · Form-Data+1
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
form-data versions prior to 2.5.6
form-data versions prior to 3.0.5
form-data versions prior to 4.0.6
Description
The
field argument to FormData#append and the filename option are concatenated verbatim into the Content-Disposition header without escaping carriage return (CR), line feed (LF), or double-quote (") characters. This allows an attacker to perform CRLF injection (Carriage Return Line Feed injection), which is the process of inserting special characters to manipulate the structure of an HTTP header. If an application uses untrusted input as a field name or filename, an attacker can terminate the header line to inject additional headers or smuggle entire multipart parts into the request forwarded to a backend. This can enable the attacker to add or override form fields, such as setting is admin=true, as seen by the downstream parser.Recommendations
Update to version 2.5.6.
Update to version 3.0.5.
Update to version 4.0.6.
Exploit
Fix
DoS
RCE
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Weakness Enumeration
Related Identifiers
Affected Products
Confluence
Form-Data