CVE-2025-73393.4LowCWE-241

CVE-2025-7339: on-headers vulnerable to http response header manipulation

jshttp · on-headers

Vendor fix available · Affected: jshttp on-headers · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.2%probability of exploitation in the next 30 days

10th percentile

050100

Higher than 10% of scored CVEs

3.4LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

jshttp · on-headersbefore 1.1.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Handling of Unexpected Data Type · Input Validation and Logic
Published: July 2025
Band: Unlikely (under 1%), July 2025

CoverageNo articles yet

No CyberSIXT article names CVE-2025-7339 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.