bbp style pack <= 6.4.8 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Author Display Name
Published Oct 1, 2026
6.4
MEDIUMCVSS 3.1
EPSS 0.20%
Description
The bbp style pack plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name (via /wp-admin/profile.php) + bbp_reply_content (via bbPress reply form)' parameter in all versions up to, and including, 6.4.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires the attacker to wrap their crafted reply in a <pre> block, which prevents WordPress's wpautop/wptexturize processors from converting straight double quotes in the stored display name into typographic curly-quote entities that would otherwise neutralize the attribute-injection.
Affected products
-
- Version 0StatusaffectedConstraints<=6.4.8
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Robin-W | Bbp Style Pack | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Oct 1, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.20% (0.00201) | 9.01th | v5 (v2026.06.15) |
| Oct 2, 2026 | 0.20% (0.00201) | 9.00th | v5 (v2026.06.15) |
References (7)
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.8/includes/functions_quote.php#L223
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.8/includes/functions_quote.php#L244
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.8/includes/functions_quote.php#L249
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.8/includes/functions_quote.php#L275
- https://plugins.trac.wordpress.org/browser/bbp-style-pack/tags/6.4.8/includes/functions_quote.php#L83
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3719484%40bbp-style-pack&new=3719484%40bbp-style-pack
- https://www.wordfence.com/threat-intel/vulnerabilities/id/31c9b86b-c971-4a0b-95ef-10bc7781e93f?source=cve
Change history (0)
No recorded changes yet.