CVE & CISA-KEV Catalog

CVE-2024-6844

MEDIUM
5.3
CVSS v3
NVD

Description

A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.

CWE-346

How to fix

Remediation Available
python-flask-corsDebian
Fixed in:3.0.9-2+deb11u1CVE-2024-6844
Fixed in:3.0.10-2+deb12u1CVE-2024-6844
Fixed in:6.0.0-1CVE-2024-6844
Fixed in:6.0.0-1CVE-2024-6844
python-flask-corsUbuntu
Fixed in:3.0.8-2ubuntu0.1+esm1USN-7612-1
Fixed in:3.0.9-2ubuntu0.1USN-7612-1
Fixed in:4.0.0-1ubuntu0.1~esm1USN-7612-1
python3-flask-corsUbuntu
Fixed in:3.0.8-2ubuntu0.1+esm1USN-7612-1
Fixed in:3.0.9-2ubuntu0.1USN-7612-1
Fixed in:4.0.0-1ubuntu0.1~esm1USN-7612-1

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

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.28%probability of exploitation in 30 days
20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Exploit1
Other references1

Related Vulnerabilities

Other CWE-346 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2009-1185High7.282%-Fix
CVE-2025-34291High8.879%KEV-
CVE-2020-16952High8.671%--
CVE-2023-29711Critical9.870%--
CVE-2015-4495High8.870%KEVFix
CVE-2024-23898High8.867%-Fix
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Markdown

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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 2025-11-03.