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CVE-2026-9520

blitz-js blitz Sign-in LoginForm.tsx cross site scripting

Published: May 26, 2026Updated: May 26, 2026 Sources: CVE List
NVD MITRE
4.3CVSS
MEDIUM

A weakness has been identified in blitz-js blitz up to 3.0.2 on GitHub. This impacts an unknown function of the file packages/generator/templates/app/src/app/auth/components/LoginForm.tsx of the component Sign-in. This manipulation of the argument Next causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

EPSS Score
0.0%
Top 90.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-79Cross Site ScriptingCWE-94Code Injection

Affected Products

blitz
blitz-js

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://vuldb.com/vuln/365540
vuldb.com
https://vuldb.com/vuln/365540/cti
vuldb.com
https://vuldb.com/submit/814378
vuldb.com
and 1 more references View all →

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