CVE-2021-33988 json
Cross Site Scripting in Microweber
published 2021-10-19 5 y ago modified 2026-06-17 4 mo ago also GHSA-w7x8-cq7r-g5g9 , EUVD-2021-2263
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Cross Site Scripting (XSS). vulnerability exists in Microweber CMS 1.2.7 via the Login form, which could let a malicious user execute Javascript by Inserting code in the request form.
Patch / fix
- packagist microweber/microweber 1.2.8
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/nck0099/osTicket/issues/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | microweber/microweber | <1.2.8 |
1.2.8 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/nck0099/osTicket/issues/2
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-33988
advisory
-
github.com
/microweber/microweber
package
Sources
- CVE List CVE-2021-33988
- GitHub Advisory GHSA-w7x8-cq7r-g5g9
- NVD CVE-2021-33988
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