CVE
CVE-2025-59837
Astro's bypass of image proxy domain validation leads to SSRF and potential XSS
Summary
This is a patch bypass of CVE-2025-58179 in commit 9ecf359. The fix blocks http://, https:// and //, but can be bypassed using backslashes (``) - the endpoint still issues a server-side fetch.
PoC
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
C
H
U
7.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Related Resources
No items found.
References
https://github.com/withastro/astro/security/advisories/GHSA-qcpr-679q-rhm2, https://nvd.nist.gov/vuln/detail/CVE-2025-59837, https://github.com/withastro/astro/commit/1e2499e8ea83ebfa233a18a7499e1ccf169e56f4, https://github.com/withastro/astro/commit/9ecf3598e2b29dd74614328fde3047ea90e67252, https://github.com/withastro/astro
Basic Information
Ecosystem
