CVE-2023-50833: extendthemes colibri page builder Cross-site Scripting
CVSS: 6.5v3.1MediumModified
Published 21-12-2023Last modified 28-04-2026
Vulnerability summary
CVE-2023-50833 is a medium (CVSS 6.5) Cross-site Scripting vulnerability in extendthemes colibri page builder. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.7% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 1.0.241.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.37%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 21-12-2023PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ExtendThemes Colibri Page Builder allows Stored XSS.This issue affects Colibri Page Builder: from n/a through 1.0.239.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:LSources3 sources · 5.4–6.5
- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NDiffers
- wordfenceSource6.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NDiffers
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
30%
Versus all other CVEs
30-day change
0.00 pp
From 0.37% on 21-09-2026
21-09-202621-10-2026
EPSS score0.37%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (patchstack.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Extendthemes1 product
- colibri page builder≥ n/a, ≤ 1.0.239 | ≤ 1.0.239
Wordpress1 product
- colibri-page-builder≤ 1.0.240 (fixed in 1.0.241)
2 vendors · 2 products