EUVD-2026-89655
GHSA-wm87-9v37-7595
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Network-reachable authentication bypass with no privileges or interaction (AV:N/AC:L/PR:N/UI:N); grants data access and modification (C:H/I:H) but no availability impact.
Primary rating from Vendor (patchstack).
CVSS VectorVendor: patchstack
Lifecycle Timeline
2DescriptionCVE.org
Improper Validation of Unsafe Equivalence in Input vulnerability in Liquid Web / StellarWP GiveWP allows Authentication Bypass.
This issue affects GiveWP: from n/a through 4.16.9.
Articles & Coverage 1
AnalysisAI
Authentication bypass in the GiveWP WordPress donation plugin (all versions through 4.16.9) allows remote, unauthenticated attackers to satisfy the plugin's credential/equivalence check with crafted input and reach privileged plugin functionality on any affected site. Scoring CVSS 3.1 base 9.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N), exploitation requires only that the plugin be installed and reachable - no account, no privileges, and no victim interaction - with high confidentiality and integrity impact, which makes automated scanning of WordPress installs a realistic attack model. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation is possible against default configurations of any WordPress site running the GiveWP donation plugin at version 4.16.9 or earlier (CVSS PR:N/UI:N/AC:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuinely high-priority issue: the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N, base 9.1) describes a network-reachable, low-complexity authentication bypass requiring no privileges and no user interaction, with high confidentiality and integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is to upgrade GiveWP to a release later than 4.16.9; the provided data identifies 4.16.9 and earlier as vulnerable but does not state the exact patched version number, so confirm the current fixed release and upgrade instructions in the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/give/vulnerability/wordpress-givewp-plugin-4-16-9-broken-authentication-vulnerability?_s_id=cve). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every WordPress installation hosting GiveWP at version 4.16.9 or earlier, treat the plugin as unsafe, and either deactivate it entirely (pausing donation collection) or, if donation functionality is business-critical, restrict public reachability to the plugin's endpoints and front-end donation routes via WAF rules, IP allowlisting, or reverse-proxy controls; simultaneously deploy virtual patching or custom WAF signatures blocking crafted authentication-bypass requests to the plugin, and review web and plugin logs for anomalous unauthenticated access to privileged GiveWP functionality. …
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External POC / Exploit Code
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