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

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- migkapa / AI Alt Text Generator: ≥ 0; ≤ 2.7.0 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N; source: CNA: Wordfence

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N; source: NVD: security@wordfence.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/fa4741fa-0871-4f23-b164-94f5e94f5712?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/admin/class-ai-alt-text-generator-admin.php#L585 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/includes/class-ai-alt-text-generator.php#L175 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/includes/functions.php#L249 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/changeset?reponame=&old=3767321%40ai-alt-text-generator&new=3767321%40ai-alt-text-generator (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/admin/class-ai-alt-text-generator-admin.php#L585 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/includes/class-ai-alt-text-generator.php#L175 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/includes/functions.php#L249 (security@wordfence.com)

- https://plugins.trac.wordpress.org/changeset?reponame=&old=3767321%40ai-alt-text-generator&new=3767321%40ai-alt-text-generator (security@wordfence.com)

- https://www.wordfence.com/threat-intel/vulnerabilities/id/fa4741fa-0871-4f23-b164-94f5e94f5712?source=cve (security@wordfence.com)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-120578; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-120578; retrieved 2026-11-03; source updated 2026-11-03

Revision: 9102f68f4d5be05e009f3bc4c1a3934f965424f5fc5c4f4fe25cedc5c8f47791

Canonical: https://y2.dev/cve/CVE-2026-120578

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.