CVE-2025-13803

CVE-2025-13803 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-644.

Key facts

Description

A vulnerability was identified in MediaCrush 1.0.0/1.0.1. The affected element is an unknown function of the file /mediacrush/paths.py of the component Header Handler. Such manipulation of the argument Host leads to improper neutralization of http headers for scripting syntax. The attack can be launched remotely.

Frequently asked questions

What is CVE-2025-13803?
A vulnerability was identified in MediaCrush 1.0.0/1.0.1. The affected element is an unknown function of the file /mediacrush/paths.py of the component Header Handler. Such manipulation of the argument Host leads to improper neutralization of http headers for scripting syntax. The attack can be launched remotely.
How severe is CVE-2025-13803?
CVE-2025-13803 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-13803 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-13803?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-13803 have an EU (EUVD) identifier?
Yes. CVE-2025-13803 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199947.
When was CVE-2025-13803 published?
CVE-2025-13803 was published on 2025-12-01 and last updated on 2026-06-17.

References

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