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TI-2021-06700 Aliases CVE-2021-24408GHSA-vc6f-wccw-cfjq

Prismatic < 2.8 - Contributor+ Stored XSS

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

The Prismatic WordPress plugin before 2.8 does not sanitise or validate some of its shortcode parameters, allowing users with a role as low as Contributor to set Cross-Site payload in them. A post made by a contributor would still have to be approved by an admin to have the XSS trigger able in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability.

Why it matters now

EPSS 0.00624 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Prismatic (Jeff Starr): 2.8

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
specialkPrismatic2.8 to before 2.82.8Patch availableCNA
  • Prismatic Vendorspecialk Affected 2.8 to before 2.8 Fixed in 2.8 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:plugin-planet:prismatic:*:*:*:*:*:wordpress:*:*before 2.8Vulnerablespecialk
  • cpe:2.3:a:plugin-planet:prismatic:*:*:*:*:*:wordpress:*:* Versions before 2.8 Vulnerable ·specialk

Remediation

  • Fix · CNA Prismatic (Jeff Starr) Fixed in 2.8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Jeff Starr Prismatic 2.8

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2021-06701 Prismatic < 2.8 - Reflected Cross-Site Scripting (XSS)Priority LOW 31
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-24408
  2. 2026-10-03 Alias added: GHSA-vc6f-wccw-cfjq
  3. 2026-11-04 EPSS moved to the 50th–90th percentile

References

Exploit 1

  • TI-2021-06701 Prismatic < 2.8 - Reflected Cross-Site Scripting (XSS) CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences