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Vulnerability Details :

CVE-2025-54793

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-08 Aug, 2025 | 00:02
Updated At-08 Aug, 2025 | 16:55
Rejected At-
Credits

Astro: Duplicate trailing slash feature can lead to Open Redirects

Astro is a web framework for content-driven websites. In versions 5.2.0 through 5.12.7, there is an Open Redirect vulnerability in the trailing slash redirection logic when handling paths with double slashes. This allows an attacker to redirect users to arbitrary external domains by crafting URLs such as https://mydomain.com//malicious-site.com/. This increases the risk of phishing and other social engineering attacks. This affects sites that use on-demand rendering (SSR) with the Node or Cloudflare adapters. It does not affect static sites, or sites deployed to Netlify or Vercel. This issue is fixed in version 5.12.8. To work around this issue at the network level, block outgoing redirect responses with a Location header value that starts with `//`.

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:08 Aug, 2025 | 00:02
Updated At:08 Aug, 2025 | 16:55
Rejected At:
▼CVE Numbering Authority (CNA)
Astro: Duplicate trailing slash feature can lead to Open Redirects

Astro is a web framework for content-driven websites. In versions 5.2.0 through 5.12.7, there is an Open Redirect vulnerability in the trailing slash redirection logic when handling paths with double slashes. This allows an attacker to redirect users to arbitrary external domains by crafting URLs such as https://mydomain.com//malicious-site.com/. This increases the risk of phishing and other social engineering attacks. This affects sites that use on-demand rendering (SSR) with the Node or Cloudflare adapters. It does not affect static sites, or sites deployed to Netlify or Vercel. This issue is fixed in version 5.12.8. To work around this issue at the network level, block outgoing redirect responses with a Location header value that starts with `//`.

Affected Products
Vendor
withastro
Product
astro
Versions
Affected
  • >= 5.2.0, < 5.12.8
Problem Types
TypeCWE IDDescription
CWECWE-601CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Type: CWE
CWE ID: CWE-601
Description: CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Metrics
VersionBase scoreBase severityVector
4.05.5MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P
Version: 4.0
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/withastro/astro/security/advisories/GHSA-cq8c-xv66-36gw
x_refsource_CONFIRM
https://github.com/withastro/astro/commit/0567fb7b50c0c452be387dd7c7264b96bedab48f
x_refsource_MISC
Hyperlink: https://github.com/withastro/astro/security/advisories/GHSA-cq8c-xv66-36gw
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/withastro/astro/commit/0567fb7b50c0c452be387dd7c7264b96bedab48f
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:08 Aug, 2025 | 01:15
Updated At:08 Aug, 2025 | 20:30

Astro is a web framework for content-driven websites. In versions 5.2.0 through 5.12.7, there is an Open Redirect vulnerability in the trailing slash redirection logic when handling paths with double slashes. This allows an attacker to redirect users to arbitrary external domains by crafting URLs such as https://mydomain.com//malicious-site.com/. This increases the risk of phishing and other social engineering attacks. This affects sites that use on-demand rendering (SSR) with the Node or Cloudflare adapters. It does not affect static sites, or sites deployed to Netlify or Vercel. This issue is fixed in version 5.12.8. To work around this issue at the network level, block outgoing redirect responses with a Location header value that starts with `//`.

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
Secondary4.05.5MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-601Primarysecurity-advisories@github.com
CWE ID: CWE-601
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/withastro/astro/commit/0567fb7b50c0c452be387dd7c7264b96bedab48fsecurity-advisories@github.com
N/A
https://github.com/withastro/astro/security/advisories/GHSA-cq8c-xv66-36gwsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/withastro/astro/commit/0567fb7b50c0c452be387dd7c7264b96bedab48f
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/withastro/astro/security/advisories/GHSA-cq8c-xv66-36gw
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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