e621ng before 26.09.16 Open Redirect via URL Parameters (CVE-2026-95813) | HOL Guard CVE

Medium · CVSS 5.3CVE-2026-95813

e621ng before 26.09.16 Open Redirect via URL Parameters

Answer in brief

CVE-2026-95813 records a Medium severity (CVSS 5.3) vulnerability in e621ng before 26.09.16 Open Redirect via URL Parameters. The current sources do not mark it as known exploited. The current feed maps e621ng/e621ng (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 22, 2026Updated Sep 22, 2026Source checked Sep 22, 2026First seen by HOL Sep 22, 2026Material review Sep 22, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps e621ng/e621ng (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
e621ng/e621nggeneric	>=0 <26.09.16	26.09.16

Recommended response

Check inventory. Check lockfiles and deployed manifests for e621ng/e621ng.
Review the reported fix. Update e621ng/e621ng to 26.09.16 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 22, 2026

Sources and claim methodology

Upstream source description

e621ng versions before 26.09.16 pass untrusted request parameters directly to Rails url_for in PaginatorComponent and controller navigation links, allowing attackers to redirect pagination and navigation controls to attacker-controlled origins. Attackers can supply host, protocol, and port query parameters that are interpreted as URL generation options, causing pagination links to point to malicious domains while the initial page loads from the legitimate site.

Quoted source text, attributed separately from HOL analysis.