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Safe Redirect Manager CVE-2026-88791

| EUVDEUVD-2026-89613 LOW
URL Redirection to Untrusted Site (Open Redirect) (CWE-601)
2026-09-30 contact@wpscan.com GHSA-xxpw-g4gr-qqvv
3.4
CVSS 3.1 · Vendor: wpscan
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify site with vulnerable wildcard redirect rule
  2. Delivery
    Craft malicious request path abusing redirect
  3. Exploit
    Deliver link to victim (phishing)
  4. Execution
    Victim clicks trusted site URL
  5. Impact
    Browser redirected to attacker-controlled external site

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Redirect URL validation
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires that the site administrator has already configured a wildcard redirect rule whose destination is an absolute URL - this is a specific, non-default plugin configuration, not the out-of-box state, which is why the vector carries AC:H. Additionally, a victim must actively follow an attacker-crafted request path (UI:R), so exploitation cannot occur without user interaction. No authentication is required of the attacker (PR:N). Impact is limited to redirecting the victim's browser to an arbitrary external site (integrity-only, I:L); there is no direct data disclosure or service disruption. Affected: Safe Redirect Manager before 2.3.0.

Impact

This is a genuinely low-priority open redirect (CWE-601). The provided CVSS 3.1 vector (AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N, base 3.4) is internally consistent with the description and its LOW severity is credible: while the attack vector is network and unauthenticated (PR:N), exploitation is throttled by high attack complexity (AC:H - a non-default wildcard-to-absolute-URL redirect rule must already be configured), mandatory user interaction (UI:R - a victim must follow a crafted link), and integrity-only impact (I:L, no confidentiality or availability). CISA SSVC reinforces the low-urgency read: Exploitation=none (no observed activity), Automatable=no, Technical Impact=partial. There is no EPSS score, no CISA KEV listing, and no public exploit code provided - exploitation status is 'no public exploit identified at time of analysis.' All signals align consistently here; there is no CVSS-vs-reality conflict to flag. The one caveat is that open redirects are primarily phishing/social-engineering enablers rather than direct system compromises, so real-world risk is a function of how the site is targeted, not a widespread automated threat.

Exploit ScenarioDerived

An attacker identifies a WordPress site running Safe Redirect Manager (<2.3.0) that has configured a wildcard redirect rule pointing to an absolute URL. The attacker crafts a link with a malicious request path that abuses the unvalidated destination and distributes it (e.g., in a phishing email) so that a victim clicking the trusted-looking site link is silently redirected to an attacker-controlled external site to harvest credentials or deliver malware. No public exploit code is provided for this CVE.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 30, 2026

Open redirect in the Safe Redirect Manager WordPress plugin before 2.3.0 lets unauthenticated attackers bounce a victim's browser to an arbitrary external site. Exploitation is not out-of-the-box: it requires a site administrator to have already configured a wildcard redirect rule whose destination is an absolute URL (the reason the assessed vector carries AC:H), and the victim must actively follow an attacker-crafted request path (UI:R). No authentication is needed by the attacker (PR:N) and impact is integrity-only (I:L), with no data disclosure or service disruption; no public exploit identified at time of analysis, and CISA's SSVC decision framework rates exploitation as 'none'.

RemediationAI

Upgrade Safe Redirect Manager to version 2.3.0 or later, which is the vendor-released fix and the version in which the destination validation for wildcard absolute-URL rules was corrected. Confirm the running plugin version in the WordPress admin Plugins screen or via WP-CLI ('wp plugin list') and, where the plugin is managed centrally, push the update through the normal deployment pipeline and purge any site-level caching so the patched redirect handler is actually served. If upgrading must be deferred, the effective compensating control is to eliminate the exploitable configuration rather than to add generic hardening: audit every redirect rule for wildcard patterns whose destination is an absolute external URL and either convert them to path-relative or same-host destinations, or replace the wildcard with explicit per-path rules that pin the destination host - the trade-off is that this reduces rule flexibility, can break legitimate deep redirects, and requires re-testing of any inbound links or marketing URLs that depended on the wildcard. If no legitimate wildcard-external rule exists, deleting such rules outright carries no functional cost. Deactivating the plugin entirely removes the exposure but obviously stops all redirect management, so it is only appropriate where redirects are non-essential. Because the flaw is a redirect-integrity issue rather than a code-execution or disclosure bug, additional measures such as restricting admin access or WAF rules are of marginal value; monitoring server logs for 3xx responses to unexpected external hosts from wildcard-matched paths can help detect probing attempts. Advisory details are available at the WPScan vulnerability entry and the NVD record linked above.

Affected VersionsENISA

Safe Redirect Manager 0 <2.3.0

Affected Packages

euvd safe_redirect_manager fix: 2.3.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Safe Redirect Manager is a WordPress plugin that lets administrators define and manage HTTP redirect rules, including wildcard patterns that match a family of request paths and forward them to a configured destination. Root cause is CWE-601 (URL Redirection to Untrusted Site / 'Open Redirect'): when a wildcard rule's destination is specified as an absolute URL, the plugin fails to validate the resolved destination against an allowlist of trusted hosts before issuing the redirect, so a crafted request path satisfying the wildcard pattern yields a 3xx response pointing at an attacker-chosen external domain. Because the redirect is served by the victim site itself, the resulting link inherits the origin's trust signals, which is the classic open-redirect abuse pattern for phishing chains, OAuth/SSO redirect-parameter abuse, and malware distribution. The affected component is the WordPress plugin layer rather than WordPress core; no CPE strings were supplied with the source data, so exact identification rests on the EUVD version range and the WPScan advisory. The CVSS 3.1 vector AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N reflects that reachability is network-based and attacker privileges are unnecessary, but exploitation is gated behind a specific non-default configuration (wildcard rule to an absolute URL) and mandatory victim interaction, and the scope change (S:C) accounts for the redirect crossing into a foreign security authority.

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Severity by source

Vendor (wpscan) PRIMARY 3.4 LOW
AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N
vuln.today AI 3.4 LOW

AC:H because a non-default wildcard-to-absolute-URL rule must be preconfigured; PR:N/UI:R since any unauthenticated attacker can craft a link but a victim must click; S:C and I:L reflect a browser redirect off the trusted origin with no data impact.

3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N
4.0 AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

Primary rating from Vendor (wpscan).

CVSS VectorVendor: wpscan

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

2
Patch available
Sep 30, 2026 - 07:01 EUVD
CVE Published
Sep 30, 2026 - 06:17 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

The Safe Redirect Manager WordPress plugin before 2.3.0 does not properly validate the redirect destination when a wildcard redirect rule to an absolute URL is configured, allowing unauthenticated attackers to redirect visitors to an arbitrary external website via a crafted request path.

Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Prevalence
Medium
Popular 10up WordPress redirect-management plugin, ~100k+ active installs
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

17
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +17
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0
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