CVE-2026-95813Network attack vector

Open redirect via url_for option injection

Published Sep 22, 2026 · Updated Sep 22, 2026

Open redirect in e621ng E621 before 26.09.16 allows remote attackers to send users to attacker-controlled origins via crafted URLs. Crafted host, protocol, and port request parameters reach Rails url_for as top-level options in PaginatorComponent and controller navigation links instead of query data. A victim must load a crafted URL and then follow a generated pagination or navigation link, enabling redirection from the legitimate site to a malicious origin.

CVSS severityUnavailable
Unscored
EPSS probability0.34%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in e621ng E621 before 26.09.16 allows remote attackers to send users to attacker-controlled origins via crafted URLs. Crafted host, protocol, and port request parameters reach Rails url_for as top-level options in PaginatorComponent and controller navigation links instead of query data. A victim must load a crafted URL and then follow a generated pagination or navigation link, enabling redirection from the legitimate site to a malicious origin.

The record

CVE
CVE-2026-95813
Published
Sep 22, 2026
Updated
Sep 22, 2026
Vendor
e621ng
Product
E621
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 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=0 <26.09.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

e621ng · E621version=0 <26.09.16

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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