CVE-2021-24126 json
Envira Gallery Lite < 1.8.3.3 - Authenticated Stored Cross-Site Scripting
published 5y ago modified 4mo ago also EUVD-2021-11040
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- enviragallery envira_gallery 1.8.3.3
Is CVE-2021-24126 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/f3952bd1-ac2f-4007-9e19-6c44a22465f3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- Unknown Envira Gallery Lite
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/f3952bd1-ac2f-4007-9e19-6c44a22465f3
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24126
- NVD CVE-2021-24126
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.