XSS in Jeff Starr Prismatic
CVE-2021-24408
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Jeff Starr Prismatic — versions 2.8
- Plugin-Planet Prismatic
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/51855853-e7bd-425f-802c-824209f4f84d (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24408?
- CVE-2021-24408 is a medium-severity vulnerability in Jeff Starr Prismatic, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-12.
- How severe is CVE-2021-24408?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2021-24408 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.