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Vulnerability Details :

CVE-2026-25479

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-09 Feb, 2026 | 18:48
Updated At-10 Feb, 2026 | 16:01
Rejected At-
Credits

Litestar has an AllowedHosts validation bypass due to unescaped regex metacharacters in configured host patterns

Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:09 Feb, 2026 | 18:48
Updated At:10 Feb, 2026 | 16:01
Rejected At:
▼CVE Numbering Authority (CNA)
Litestar has an AllowedHosts validation bypass due to unescaped regex metacharacters in configured host patterns

Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0.

Affected Products
Vendor
litestar-org
Product
litestar
Versions
Affected
  • < 2.20.0
Problem Types
TypeCWE IDDescription
CWECWE-185CWE-185: Incorrect Regular Expression
Type: CWE
CWE ID: CWE-185
Description: CWE-185: Incorrect Regular Expression
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4
x_refsource_CONFIRM
https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace
x_refsource_MISC
https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0
x_refsource_MISC
https://github.com/litestar-org/litestar/releases/tag/v2.20.0
x_refsource_MISC
Hyperlink: https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace
Resource:
x_refsource_MISC
Hyperlink: https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0
Resource:
x_refsource_MISC
Hyperlink: https://github.com/litestar-org/litestar/releases/tag/v2.20.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:09 Feb, 2026 | 20:15
Updated At:09 Feb, 2026 | 21:55

Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-185Primarysecurity-advisories@github.com
CWE ID: CWE-185
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0security-advisories@github.com
N/A
https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4acesecurity-advisories@github.com
N/A
https://github.com/litestar-org/litestar/releases/tag/v2.20.0security-advisories@github.com
N/A
https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4security-advisories@github.com
N/A
Hyperlink: https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/litestar-org/litestar/releases/tag/v2.20.0
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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2Records found
CVE-2026-25480
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ShareView Details
Matching Score-8
Assigner-GitHub, Inc.
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EPSS-0.04% / 11.13%
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Action-Not Available
Vendor-litestar-org
Product-litestar
CWE ID-CWE-176
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Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-4.8||MEDIUM
EPSS-0.01% / 1.70%
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Published-27 Jan, 2026 | 19:06
Updated-04 Feb, 2026 | 15:34
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
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Hono's IPv4 address validation bypass in IP Restriction Middleware allows IP spoofing

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The `IPV4_REGEX` pattern and `convertIPv4ToBinary` function in `src/utils/ipaddr.ts` do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.

Action-Not Available
Vendor-honohonojs
Product-honohono
CWE ID-CWE-185
Incorrect Regular Expression
Details not found