TI-2025-37276 Aliases CVE-2025-59837 GHSA-qcpr-679q-rhm2

astro allows bypass of image proxy domain validation leading to SSRF and potential XSS

LOW 38CWE-79Published 2025-10-28 · Updated 2025-10-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to server-side request forgery (SSRF) and potentially cross-site scripting (XSS). This vulnerability exists due to an incomplete fix for CVE-2025-58179. Fixed in 5.13.10.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00351 28th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed astro (withastro): 5.13.10astro (npm): 5.13.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
withastro	astro	5.13.4 to before 5.13.10	5.13.10	Patch available	CNA
—	astro (npm)	5.13.4 to before 5.13.10	5.13.10	Patch available	GHSA-qcpr-679q-rhm2

astro Vendorwithastro Affected 5.13.4 to before 5.13.10 Fixed in 5.13.10 Patch available CNA
astro (npm) Vendor— Affected 5.13.4 to before 5.13.10 Fixed in 5.13.10 Patch available GHSA-qcpr-679q-rhm2

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:astro:astro::::::node.js::*	5.13.4 to before 5.13.10	Vulnerable	withastro

cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:* Versions 5.13.4 to before 5.13.10 Vulnerable ·withastro

Remediation

Fix · CNA astro (withastro) Fixed in 5.13.10
Fix · GHSA-qcpr-679q-rhm2 astro (npm) Fixed in 5.13.10 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-59837
2026-10-03 Alias added: GHSA-qcpr-679q-rhm2

References

Exploit 1

https://github.com/withastro/astro/security/advisories/GHSA-qcpr-679q-rhm2

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-59837

Other 1

https://github.com/withastro/astro

TI-2024-37142 Server source code is exposed to the public if sourcemaps are enabled CVSS 4.0HIGH 7.8
TI-2025-34958 Unauthorized third-party images in Astro’s _image endpoint CVSS 4.0MEDIUM 6.9
TI-2025-39915 Server-side request forgery in withastro astro CVSS 3.1MEDIUM 6.5
TI-2025-38274 Astro's `X-Forwarded-Host` is reflected with no validation CVSS 3.1MEDIUM 6.5
TI-2026-36915 Astro: Reflected XSS via unescaped slot name CVSS 3.1HIGH 7.1
TI-2025-40102 Astro is vulnerable to Reflected XSS via the server islands feature CVSS 3.1HIGH 7.1

See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences