CVE-2026-48060Public exploitNetwork attack vector

Cross-site scripting via unescaped CSRF cookie

Published Jul 28, 2026 · Updated Jul 28, 2026

Cross-site scripting in Litestar before 2.22.0 allows remote attackers to execute JavaScript through a crafted CSRF cookie. The csrf_input template value incorporates the cookie-derived token into a hidden form field without escaping it, while the documented safe filter suppresses template-engine autoescaping. Exploitation requires templates, CSRF protection, CSRF inputs, and a victim browser that sends an attacker-set cookie to the vulnerable application.

CVSS severity8.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Litestar before 2.22.0 allows remote attackers to execute JavaScript through a crafted CSRF cookie. The csrf_input template value incorporates the cookie-derived token into a hidden form field without escaping it, while the documented safe filter suppresses template-engine autoescaping. Exploitation requires templates, CSRF protection, CSRF inputs, and a victim browser that sends an attacker-set cookie to the vulnerable application.

The record

CVE
CVE-2026-48060
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
Litestar
Product
Litestar
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Litestar · Litestarversion=< 2.20.0

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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