CVE-2025-7339
"On-Headers Header Modification Vulnerability"
Description
on-headers is a node.js middleware for listening to when a response writes headers. A bug in on-headers versions `<1.1.0` may result in response headers being inadvertently modified when an array is passed to `response.writeHead()`. Users should upgrade to version 1.1.0 to receive a patch. Uses are strongly encouraged to upgrade to `1.1.0`, but this issue can be worked around by passing an object to `response.writeHead()` rather than an array.
INFO
Published Date :
July 17, 2025, 4:15 p.m.
Last Modified :
July 17, 2025, 9:15 p.m.
Source :
ce714d77-add3-4f53-aff5-83d477b104bb
Remotely Exploitable :
No
Impact Score :
2.5
Exploitability Score :
0.8
Affected Products
The following products are affected by CVE-2025-7339
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-7339.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-7339 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-7339 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by ce714d77-add3-4f53-aff5-83d477b104bb
Jul. 17, 2025
Action Type Old Value New Value Added Description on-headers is a node.js middleware for listening to when a response writes headers. A bug in on-headers versions `<1.1.0` may result in response headers being inadvertently modified when an array is passed to `response.writeHead()`. Users should upgrade to version 1.1.0 to receive a patch. Uses are strongly encouraged to upgrade to `1.1.0`, but this issue can be worked around by passing an object to `response.writeHead()` rather than an array. Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-241 Added Reference https://cna.openjsf.org/security-advisories.html Added Reference https://github.com/expressjs/morgan/issues/315 Added Reference https://github.com/jshttp/on-headers/commit/c6e384908c9c6127d18831d16ab0bd96e1231867 Added Reference https://github.com/jshttp/on-headers/issues/15 Added Reference https://github.com/jshttp/on-headers/security/advisories/GHSA-76c9-3jph-rj3q
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-7339 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-7339
weaknesses.