CVE-2025-5821
High PUBLISHEDCase Theme User <= 1.0.3 - Authentication Bypass via Social Login
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
The Case Theme User plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.0.3. This is due to the plugin not properly logging a user in with the data that was previously verified through the facebook_ajax_login_callback(). This makes it possible for unauthenticated attackers to log in as administrative users, as long as they have an existing account on the site, and access to the administrative user's email.
- CVE Published
- Aug 23, 2025
- Exploitation Reported
- Jun 11, 2026
- CVSS
- 9.8 Critical
- EPSS
- 0.7%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Case-Themes |
Case Theme User
|
* to <= 1.0.3 |
Affected |
CVE References
- wordfence.com/threat-intel/vulnerabilities/id/3ce95a04-11b... wordfence.com · CVE Record https://www.wordfence.com/threat-intel/vulnerabilities/id/3ce95a04-11...
- themeforest.net/item/consultio-consulting-business-wordpress... themeforest.net · CVE Record https://themeforest.net/item/consultio-consulting-business-wordpress/...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| Daily CyberSecurity First | 2026-06-11 00:20 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-11 00:20:49 UTC · Daily CyberSecurity
Weaknesses (CWE)
-
Authentication Bypass Using an Alternate Path or Channel
Recent Mentions
Daily CyberSecurity · Jun 10, 2026
Cybersecurity experts recently identified a massive threat to WordPress websites. Specifically, hackers are actively exploiting a critical UpdraftPlus The post Critical UpdraftPlus CVE-2026-10795 Exploit Targets Millions appeared first on Daily CyberSecurity. Related posts: Critical WordPress Plugin Flaw (CVE-2025-7384, CVSS 9.8) Exposes 70,000+ Sites to RCE and Data Loss CVE-2025-5821: Critical Authentication Bypass in WordPress Case Theme User Plugin Exploited in the Wild Critical Flaw in Termix Docker Image (CVE-2025-59951) Leaks SSH Credentials Without Authentication
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:20 UTC about 1 month ago00:20 UTC · about 1 month ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
06:43 UTC 11 months ago06:43 UTC · 11 months ago
CVE published
Vulnerability disclosed publicly
-
19:12 UTC about 1 year ago19:12 UTC · about 1 year ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2025-5821
{
"cve_id": "CVE-2025-5821",
"title": "Case Theme User <= 1.0.3 - Authentication Bypass via Social Login",
"affected_vendor": "Case-Themes",
"affected_product": "Case Theme User",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 9.8,
"epss_score": 0.00714,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}