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CVE-2026-120578— AI Alt Text Generator <= 2.7.0 - Missing Authorization to Unauthenticated Arbitrary Attachment Modification via 'post_id' Parameter

Quick assessment

Affected
migkapa AI Alt Text Generator
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"AI Alt Text Generator"在 2.7.0 及之前的所有版本中存在授权绕过漏洞。该漏洞源于插件未正确验证用户是否有权执行相关操作，导致未认证的攻击者能够修改其他用户所拥有的任意附件的替代文本（alt text），并可选择性修改其标题、说明和描述。利用此漏洞需要攻击者拥有一个 Contributor（贡献者）级别的账户，以便从 post.php、post-new.php 或 upload.php 页面的源代码中获取 nonce 值；此外，若要覆盖 post_title、pos

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-120578

Vulnerability Information
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Vulnerability Title
AI Alt Text Generator <= 2.7.0 - Missing Authorization to Unauthenticated Arbitrary Attachment Modification via 'post_id' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The AI Alt Text Generator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.7.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the alt text, and optionally the title, caption, and description of arbitrary attachments owned by other users. Exploiting this vulnerability requires a Contributor-level account to retrieve the nonce from the page source of post.php, post-new.php, or upload.php; additionally, overwriting post_title, post_excerpt, and post_content requires the plugin's set_title, set_caption, or set_description options to be enabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
migkapa AI Alt Text Generator 0 ~ 2.7.0 -

II. Public POCs for CVE-2026-120578

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III. Intelligence Information for CVE-2026-120578

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Other References for CVE-2026-120578 (5)

IV. Related Vulnerabilities

Same weakness: CWE-862