How severe is CVE-2025-56648?

CVE-2025-56648 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-56648 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-56648?

CVE-2025-56648 primarily affects Parceljs Parcel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-56648?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-56648 have an EU (EUVD) identifier?

Yes. CVE-2025-56648 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29779.

When was CVE-2025-56648 published?

CVE-2025-56648 was published on 2025-09-17 and last updated on 2026-06-17.

CVE-2025-56648

CVE-2025-56648 is a medium-severity vulnerability in Parceljs Parcel with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-346.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29779
Weakness: CWE-346
Affected product: Parceljs Parcel
Published: 2025-09-17
Last modified: 2026-06-17

Description

npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.

Frequently asked questions

What is CVE-2025-56648?: npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.
How severe is CVE-2025-56648?: CVE-2025-56648 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-56648 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-56648?: CVE-2025-56648 primarily affects Parceljs Parcel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-56648?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-56648 have an EU (EUVD) identifier?: Yes. CVE-2025-56648 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29779.
When was CVE-2025-56648 published?: CVE-2025-56648 was published on 2025-09-17 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:parceljs:parcel:*:*:*:*:*:*:*:*
cpe:2.3:a:parceljs:parcel:2.0.0:alpha0:*:*:*:*:*:*

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