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CVE-2026-59965— @jhb.software/payload-alt-text-plugin: Alt Text Endpoint Authorization Bypass via Payload Local API `overrideAccess` Omission

Quick assessment

Affected
jhb-software payload-plugins
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.

Payload Plugins 是一套旨在增强 Payload CMS 功能的插件集合。在 0.7.0 版本中，@jhb.software/payload-alt-text-plugin 暴露了 POST /api/alt-text-plugin/generate 和 POST /api/alt-text-plugin/bulk 两个端点，其默认访问控制（guard）允许任何已认证的用户访问。同时，alt-text/src/endpoints/generateAltText.ts 和 alt-text/src/en

CVSS 7.1 · High
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I. Basic Information for CVE-2026-59965

Vulnerability Information
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Vulnerability Title
@jhb.software/payload-alt-text-plugin: Alt Text Endpoint Authorization Bypass via Payload Local API `overrideAccess` Omission
Source: CVE Program / CVE List V5
Vulnerability Description
Payload Plugins is a collection of plugins designed to enhance Payload CMS. In 0.7.0, @jhb.software/payload-alt-text-plugin exposes POST /api/alt-text-plugin/generate and POST /api/alt-text-plugin/bulk with a default guard that accepts any authenticated user, while alt-text/src/endpoints/generateAltText.ts and alt-text/src/endpoints/bulkGenerateAltTexts.ts call req.payload.findByID and req.payload.update without overrideAccess: false. Payload therefore defaults overrideAccess to true and skips the target collection's read and update access functions. An authenticated low-privilege user can supply id, collection, locale, and update values to read arbitrary protected upload documents and overwrite their alt and keywords fields, even when the collection permits those operations only to administrators. A control Local API call with overrideAccess: false is denied, confirming that the plugin endpoint bypasses otherwise effective collection rules. This vulnerability is fixed in 0.8.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jhb-software payload-plugins < 0.8.0 -
@jhb.software payload-alt-text-plugin < 0.8.0 -

II. Public POCs for CVE-2026-59965

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III. Intelligence Information for CVE-2026-59965

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Patches & Fixes for CVE-2026-59965 (2)

Vendor Advisories for CVE-2026-59965 (1)

Vendor Pages for CVE-2026-59965 (1)

IV. Related Vulnerabilities

Same product: payload-plugins
Same vendor: jhb-software
Same weakness: CWE-863

V. Comments for CVE-2026-59965

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