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CVE-2026-90978— Filter Gallery < 1.1.5 - Subscriber+ Arbitrary Post Overwrite and Plugin Option Deletion via Fail-Open Nonce Check

Quick assessment

Affected
Unknown Filter Gallery
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Filter Gallery WordPress 插件在 1.1.5 之前的版本中，在省略 nonce 字段的情况下，其部分 AJAX 处理器未对 nonce 进行验证，且未进行任何权限（capability）检查。这使得低权限用户能够覆盖任意文章的内容，并删除 Filter Gallery WordPress 插件 1.1.5 之前版本中已存储的画廊选项。

AI Predicted 6.5 Difficulty: Easy EPSS 0.34% · P28

Possible ATT&CK Techniques 2 AI

T1059.007 · JavaScript T1190.001

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Filter Gallery 1.1.2< 1.1.5 affected
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I. Basic Information for CVE-2026-90978

Vulnerability Information
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Vulnerability Title
Filter Gallery < 1.1.5 - Subscriber+ Arbitrary Post Overwrite and Plugin Option Deletion via Fail-Open Nonce Check
Source: CVE Program / CVE List V5
Vulnerability Description
The Filter Gallery WordPress plugin before 1.1.5 does not verify the nonce on several of its AJAX handlers when the nonce field is omitted, and applies no capability check, allowing low-privileged users to overwrite the content of arbitrary posts and delete the Filter Gallery WordPress plugin before 1.1.5's stored gallery options.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Filter Gallery 1.1.2 ~ 1.1.5 -

II. Public POCs for CVE-2026-90978

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III. Intelligence Information for CVE-2026-90978

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Other References for CVE-2026-90978 (1)

Same Patch Batch · Unknown · 2026-09-18 · 32 CVEs total

CVE-2026-88994 6.6 MEDIUM All Bootstrap Blocks 1.3.20 - 1.3.31 - Contributor+ LFI via lightspeed Block Attributes
CVE-2026-79713 6.5 MEDIUM Breeze Cache 1.2.5 - 2.5.14 - Unauthenticated Cache Poisoning via Unkeyed Tracking Paramet
CVE-2026-90977 5.3 MEDIUM Clean Login < 1.19 - Unauthenticated CAPTCHA Bypass via Empty Session Comparison
CVE-2026-90976 5.3 MEDIUM Clean Login < 1.19 - Unauthenticated Account Creation with Registration Disabled
CVE-2026-86800 5.3 MEDIUM WP Ghost (Hide My WP Ghost) < 7.0.11 - Unauthenticated URL Hiding Bypass via Loopback Comp
CVE-2026-86796 5.3 MEDIUM WP Ghost (Hide My WP Ghost) 7.0.10 - Unauthenticated Firewall, Threat Detection and URL Hi
CVE-2026-87775 Tz Weekly Radio Schedule <= 1.8.1 - Unauthenticated SQLi via tzwrs_update_cell
CVE-2026-90984 Generate PDF using Contact Form 7 < 4.2.2 - Unauthenticated Server-Side Request Forgery vi
CVE-2026-89008 Bookit < 2.6.0.5 - Bookit Staff+ Appointment PII Disclosure
CVE-2026-89007 Bookit < 2.6.0.5 - Bookit Staff+ Arbitrary Appointment Deletion via Missing Authorization
CVE-2026-87966 Easy Appointments 4.0 - 4.0.2.1 - Unauthenticated Arbitrary Appointment Modification and D
CVE-2026-88825 iGMS Direct Booking < 2.0 - Unauthenticated Stored XSS via Widget Settings
CVE-2026-88798 Really Simple Security (Free) < 9.8.3 - Unauthenticated Unbounded Option Growth via Spoofe
CVE-2026-88993 All Bootstrap Blocks <= 1.3.31 - Contributor+ Stored XSS via areoi/button type Attribute
CVE-2026-88844 MasterStudy LMS 3.6.2 - < 3.7.50 - Instructor+ Student PII Disclosure via IDOR
CVE-2026-87770 Price Drop Alert for WooCommerce <= 1.1 - Unauthenticated SQL Injection via product
CVE-2026-81810 All-in-One WP Migration and Backup < 7.111 - Authenticated Privilege Escalation to Admin v
CVE-2026-87771 Product Question and Answer <= 1.1.0 - Unauthenticated SQL Injection via p_id and read
CVE-2026-87774 Tz Weekly Radio Schedule <= 1.8.1 - Unauthenticated SQL Injection via week
CVE-2026-87965 Easy Appointments < 4.0.2.2 - Unauthenticated Appointment Cancellation/Confirmation via Fo

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Filter Gallery
Same vendor: Unknown