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Vulnerability details: VCID-v78c-t2s8-skdb
Vulnerability ID VCID-v78c-t2s8-skdb
Aliases CVE-2025-65019
GHSA-fvmw-cj7j-j39q
Summary Astro is a web framework. Prior to version 5.15.9, when using Astro's Cloudflare adapter (@astrojs/cloudflare) with output: 'server', the image optimization endpoint (/_image) contains a critical vulnerability in the isRemoteAllowed() function that unconditionally allows data: protocol URLs. This enables Cross-Site Scripting (XSS) attacks through malicious SVG payloads, bypassing domain restrictions and Content Security Policy protections. This issue has been patched in version 5.15.9.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00033 https://api.first.org/data/v1/epss?cve=CVE-2025-65019
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-fvmw-cj7j-j39q
cvssv3.1 5.4 https://github.com/withastro/astro
generic_textual MODERATE https://github.com/withastro/astro
cvssv3.1 5.4 https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
generic_textual MODERATE https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
ssvc Track https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
cvssv3.1 5.4 https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
cvssv3.1_qr MODERATE https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
generic_textual MODERATE https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
ssvc Track https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2025-65019
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2025-65019
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2025-65019
https://github.com/withastro/astro
9e9c528191b6f5e06db9daf6ad26b8f68016e533 https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
CVE-2025-65019 https://nvd.nist.gov/vuln/detail/CVE-2025-65019
GHSA-fvmw-cj7j-j39q https://github.com/advisories/GHSA-fvmw-cj7j-j39q
GHSA-fvmw-cj7j-j39q https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/withastro/astro
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-11-19T21:05:09Z/ Found at https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-11-19T21:05:09Z/ Found at https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2025-65019
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.10211
EPSS Score 0.00033
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:57:42.150970+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2025/65xxx/CVE-2025-65019.json 38.6.0