SB2026080702 - Multiple vulnerabilities in WordPress
Published: August 7, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 vulnerabilities.
1) Cross-site scripting (CVE-ID: N/A)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The vulnerability allows a remote user to execute arbitrary script code in a victim's browser.
The vulnerability exists due to cross-site scripting in the emoji settings element when processing post content. A remote user can inject specially crafted content to execute arbitrary script code in a victim's browser.
Exploitation requires contributor-level or higher permissions.
2) Cross-site scripting (CVE-ID: N/A)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The vulnerability allows a remote user to execute arbitrary script code in a victim's browser.
The vulnerability exists due to cross-site scripting in the Post Content block when processing post content. A remote user can inject specially crafted content to execute arbitrary script code in a victim's browser.
Exploitation requires contributor-level or higher permissions.
3) Cross-site scripting (CVE-ID: N/A)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The vulnerability allows a remote user to execute arbitrary script code in a victim's browser.
The vulnerability exists due to cross-site scripting in Quick Edit when handling edit operations on sites with a large number of users. A remote user can inject specially crafted content to execute arbitrary script code in a victim's browser.
Exploitation requires contributor-level or higher permissions and affects sites with a large number of users.
4) Cross-site scripting (CVE-ID: N/A)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The vulnerability allows a remote user to execute arbitrary script code in a victim's browser.
The vulnerability exists due to cross-site scripting in the Post Date block when processing post content. A remote user can inject specially crafted content to execute arbitrary script code in a victim's browser.
Exploitation requires contributor-level or higher permissions.
5) Improper access control (CVE-ID: N/A)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper access control in multisite networks when user registration is enabled and creating a new site. A remote user can create a new site to escalate privileges.
This issue affects multisite networks with user registration enabled.
6) Information disclosure (CVE-ID: N/A)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in the Latest Comments block when rendering comments from password-protected posts. A remote attacker can access exposed comments to disclose sensitive information.
7) Information disclosure (CVE-ID: N/A)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in post slug handling when accessing post slug information. A remote attacker can enumerate post slugs to disclose sensitive information.
8) Information disclosure (CVE-ID: N/A)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in comment feeds when rendering notes in feeds. A remote attacker can access comment feeds to disclose sensitive information.
9) Input validation error (CVE-ID: N/A)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to inject arbitrary stylesheet code.
The vulnerability exists due to improper input validation in the safe CSS attribute filter when processing CSS input. A remote user can bypass the filter to inject arbitrary stylesheet code.
Exploitation requires author-level or higher permissions.
10) Authentication bypass using an alternate path or channel (CVE-ID: N/A)
CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass email address confirmation.
The vulnerability exists due to improper access control in the email address confirmation flow when processing email confirmation. A remote attacker can bypass the confirmation flow to bypass email address confirmation.
11) Server-Side Request Forgery (SSRF) (CVE-ID: N/A)
CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to send requests to unintended network locations.
The vulnerability exists due to server-side request forgery in URL validation when processing user-supplied URLs. A remote attacker can supply a crafted URL to send requests to unintended network locations.
The issue allows requests to link-local ranges.
12) Cross-site scripting (CVE-ID: CVE-2026-64638)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the login screen. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information and potentially compromise the affected website.
Remediation
Install update from vendor's website.