CVE-2025-62379Public exploitNetwork attack vector

User redirection via unchecked Codespaces redirect target

Published Oct 15, 2025 · Updated Oct 15, 2025

Open redirect in Reflex 0.5.4 through 0.8.14 allows remote attackers to send users to external URLs via /auth-codespace. The generated script assigns the redirect_to query value to an anchor href without validating its origin or scheme, then programmatically clicks the anchor. Exploitation requires user interaction and a first-session browser state, while route exposure requires GitHub Codespaces or a production environment with its forwarding-domain variable set.

CVSS severity3.1
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Reflex 0.5.4 through 0.8.14 allows remote attackers to send users to external URLs via /auth-codespace. The generated script assigns the redirect_to query value to an anchor href without validating its origin or scheme, then programmatically clicks the anchor. Exploitation requires user interaction and a first-session browser state, while route exposure requires GitHub Codespaces or a production environment with its forwarding-domain variable set.

The record

CVE
CVE-2025-62379
Published
Oct 15, 2025
Updated
Oct 15, 2025
Vendor
Reflex
Product
Reflex
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 0.5.4, < 0.8.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Reflex · Reflexversion=>= 0.5.4, < 0.8.15

Published CVSS scores

3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

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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