Astro is a web framework for content-driven websites. From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Because Netlify evaluates these expressions with RegExp.test(), an allowed origin appearing only in a source URL's path or query can satisfy image.domains or image.remotePatterns while the URL's actual host remains attacker-controlled. An unauthenticated request to the public /.netlify/images endpoint can therefore cause the Image CDN to request attacker-selected URLs and may probe or reach internal services. Netlify egress protections may constrain reachable targets, and image transformation limits direct response exfiltration; no confidentiality or integrity impact has been demonstrated. This issue is fixed in version 8.2.4.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
withastro astro affected
Version Status Constraints
>= 5.2.0, < 8.2.4 affected —
@astrojs netlify affected
Version Status Constraints
>= 5.2.0, < 8.2.4 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/withastro/astro/commit/e362d4cf540b27730482455c8fc02efe57d16702 cve-icon cve-icon
https://github.com/withastro/astro/pull/17752 cve-icon cve-icon
https://github.com/withastro/astro/releases/tag/@astrojs/netlify@8.2.4 cve-icon cve-icon
https://github.com/withastro/astro/security/advisories/GHSA-4233-jc72-56c5 cve-icon cve-icon
History

Wed, 30 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description Astro is a web framework for content-driven websites. From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Because Netlify evaluates these expressions with RegExp.test(), an allowed origin appearing only in a source URL's path or query can satisfy image.domains or image.remotePatterns while the URL's actual host remains attacker-controlled. An unauthenticated request to the public /.netlify/images endpoint can therefore cause the Image CDN to request attacker-selected URLs and may probe or reach internal services. Netlify egress protections may constrain reachable targets, and image transformation limits direct response exfiltration; no confidentiality or integrity impact has been demonstrated. This issue is fixed in version 8.2.4.
Title Astro: Netlify Image CDN allowlist bypass enables SSRF
Weaknesses CWE-625
CWE-918
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-30T16:24:47.048Z

Reserved: 2026-09-29T20:46:08.333Z

Link: CVE-2026-102983

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-30T15:22:22.800

Modified: 2026-09-30T15:22:22.800

Link: CVE-2026-102983

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T16:30:12Z

Weaknesses