CVE-2021-24126: Envira Gallery Lite < 1.8.3.3 - Authenticated Stored Cross-Site Scripting
Vulnerability summary
CVE-2021-24126 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in enviragallery envira_gallery. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.9% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 18-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Unvalidated input and lack of output encoding in the Envira Gallery Lite WordPress plugin, versions before 1.8.3.3, did not properly sanitise the images metadata (namely title) before outputting them in the generated gallery, which could lead to privilege escalation.
CVSS metrics
3 scores · 2 sources · 2 versions- wordfenceSource5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.66%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.66% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Enviragallery1 product
- envira_gallery< 1.8.3.3
Unknown1 product
- envira gallery lite≥ 1.8.3.3, < 1.8.3.3
Wordpress1 product
- envira-gallery-lite< 1.8.3.3
3 vendors · 3 products
References
2 links- wpscan.com/vulnerability/f3952bd1-ac2f-4007-9e19-6c44a22465f3X Refsource MISCExploitThird Party Advisory