# CVE-2026-97642: Wp Parsidate <= 6.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'theme' Block Attribute

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

The Wp Parsidate plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the calendar Gutenberg block's 'theme' attribute in versions up to, and including, 6.4. This is due to insufficient input sanitization and output escaping on the block attribute value which is concatenated directly into an HTML class attribute in the printCalendar() function without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- man4toman / Parsi Date | بسته فارسی ساز وردپرس و ووکامرس پارسی دیت: ≥ 0; ≤ 6.4 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 6.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N; source: CNA: Wordfence

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/a88daa7b-dd50-4037-b354-bdabdac7bfbd?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wp-parsidate/tags/6.4/inc/Core/Calendar.php#L146 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wp-parsidate/tags/6.4/inc/Block/CalendarBlock.php#L40 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/wp-parsidate/tags/6.4/inc/Core/Calendar.php#L325 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/changeset?reponame=&old=3775046%40wp-parsidate&new=3775046%40wp-parsidate (CNA: Wordfence)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-97642; retrieved 2026-11-06; source updated 2026-11-06

Revision: c334d5a74c7fa2ef75cde6f6c950cbd090b0d8190944fe521ef152a1685f455d

Canonical: https://y2.dev/cve/CVE-2026-97642

## Agent and API access

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- 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.