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CVE-2026-104755— WP Compress <= 7.25.00 - Unauthenticated Privilege Escalation to 'group'/'setting'/'value' Parameters on comms Endpoint

Quick assessment

Affected
aresit WP Compress – Instant Performance & Speed Optimization
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.

WordPress 插件"WP Compress – Instant Performance & Speed Optimization"在 7.25.00 及之前的所有版本中均存在权限提升漏洞。该漏洞的根源在于： 分发器（即 ）被钩入每个前端请求，其访问控制仅通过比较调用方提供的 参数与插件存储的 API 密钥来实现，既未进行 WordPress 能力检查，也未验证 nonce。随后，未经验证的 、 和 参数被直接传递给 函数，该函数将这些参数写入 选项，且未实施白名单限制。 这使得未认证的攻击者能够将任意权限密钥

CVSS 4.8 · Medium EPSS 0.31% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
aresit WP Compress – Instant Performance & Speed Optimization ≤ 7.25.00 affected
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I. Basic Information for CVE-2026-104755

Vulnerability Information
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Vulnerability Title
WP Compress <= 7.25.00 - Unauthenticated Privilege Escalation to 'group'/'setting'/'value' Parameters on comms Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 7.25.00 The vulnerability exists because the `start_comms` dispatcher (`wps_ic_comms::start_comms`), hooked on every front-end request, gates access only by comparing the caller-supplied `apikey` parameter against the stored plugin API key with no WordPress capability check and no nonce verification, then passes the unvalidated `group`, `setting`, and `value` parameters directly to `change_setting()`, which writes them into the `WPS_IC_SETTINGS` option without an allow-list. This makes it possible for unauthenticated attackers to write arbitrary permission keys into the plugin's settings, causing `wps_ic_users::checkAndAddCaps()` to grant any WordPress role — including Subscriber — the `manage_wpc_settings` capability and thereby achieve plugin-administrator-equivalent control over the plugin's optimization, CDN, and critical-CSS surfaces. The API key required to pass the authorization check can itself be obtained without authentication via the `wpc_send_critical_remote` nopriv AJAX action: when the external critical-CSS service returns an `apiResults` field, `initCritical()` echoes the stored plugin API key back to the caller in a `wp_send_json_success` response, completing the exploit chain entirely without a WordPress login.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
aresit WP Compress – Instant Performance & Speed Optimization 0 ~ 7.25.00 -

II. Public POCs for CVE-2026-104755

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III. Intelligence Information for CVE-2026-104755

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Patches & Fixes for CVE-2026-104755 (1)

Vendor Pages for CVE-2026-104755 (1)

Other References for CVE-2026-104755 (1)

Other References for CVE-2026-104755 (1)

IV. Related Vulnerabilities

Same product: WP Compress – Instant Performance & Speed Optimization
Same vendor: aresit
Same weakness: CWE-269

V. Comments for CVE-2026-104755

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