Answer in brief
CVE-2026-102983 records a Medium severity (CVSS 6.3) vulnerability in Astro: Netlify Image CDN allowlist bypass enables SSRF. The current sources do not mark it as known exploited. The current feed maps withastro/astro (generic), @astrojs/netlify (generic), @astrojs/netlify (npm), @astrojs/netlify (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps withastro/astro (generic), @astrojs/netlify (generic), @astrojs/netlify (npm), @astrojs/netlify (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| withastro/astrogeneric | >=5.2.0 <8.2.4 | 8.2.4 |
| @astrojs/netlifygeneric | >=5.2.0 <8.2.4 | 8.2.4 |
| @astrojs/netlifynpm | >=5.2.0,<=8.2.3 | 8.2.4 |
| @astrojs/netlifynpm | >=5.2.0 <8.2.4 | 8.2.4 |
Published upstream
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 30, 2026
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.
Quoted source text, attributed separately from HOL analysis.