Is CVE-2015-5144 in the CISA KEV catalog?

No. CVE-2015-5144 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-5144?

CVE-2015-5144 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2015-5144?

CVE-2015-5144 has an EPSS score of 3.67% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-5144?

Upgrade python-django on debian 11 to 1.7.9-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-5144

MEDIUMEPSS 88th pctl

4.3

CVSS v2

NVD

Description

Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 uses an incorrect regular expression, which allows remote attackers to inject arbitrary headers and conduct HTTP response splitting attacks via a newline character in an (1) email message to the EmailValidator, a (2) URL to the URLValidator, or unspecified vectors to the (3) validate_ipv4_address or (4) validate_slug validator.

CWE-20Improper Input Validation

How to fix

Remediation Available

python-djangoDebian

Fixed in:1.7.9-1CVE-2015-5144

python-djangoUbuntu

Fixed in:1.6.1-2ubuntu0.9USN-2671-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.67%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Vendor Advisory1

djangoproject.com

Third-Party Advisory3

Other references6

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.