CVE-2021-24591: dna88 highlight Cross-site Scripting
CVSS: 5.5v3.1MediumModified
Published 06-09-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-24591 is a medium (CVSS 5.5) Cross-site Scripting vulnerability in dna88 highlight. EPSS estimates a 0.62% chance of exploitation in the next 30 days, higher than 48.9% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 0.9.3.
CVSS score
5.5/10
010
Medium · v3.1 (wordfence)EPSS score
0.62%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 06-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
The Highlight WordPress plugin before 0.9.3 does not sanitise its CustomCSS setting, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.5Preferred score · wordfence (Source)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:NSources2 sources · 5.4–5.5
- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NDiffers
Low 3.5Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.62%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
0.00 pp
From 0.62% on 19-09-2026
19-09-202619-10-2026
EPSS score0.62%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Dna881 product
- highlight< 0.9.3
Unknown1 product
- highlight≥ 0.9.3, < 0.9.3
Wordpress1 product
- highlight< 0.9.3
3 vendors · 3 products
References
2 links- wpscan.com/vulnerability/c5cbe3b4-2829-4fd2-8194-4b3a2ae0e257X Refsource MISCExploitThird Party Advisory