CVE-2020-17551 json
Cross-site scripting (XSS)
published 2020-10-07 6 y ago modified 2026-06-17 4 mo ago also GHSA-j29g-g982-pwpv , EUVD-2021-0676
- cvss
- 4.8
- 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 66%
- public exploits
- 0
- none known
Summary
ImpressCMS 1.4.0 is affected by XSS in modules/system/admin.php which may result in arbitrary remote code execution.
Patch / fix
- packagist impresscms/impresscms 1.4.1
Exploit prediction
1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ImpressCMS/impresscms/issues/659 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/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 |
| GitHub | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | impresscms/impresscms | <1.4.1 |
1.4.1 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/ImpressCMS/impresscms/issues/659
web, exploit, vendor-advisory
-
impresscms.org
/
product
-
nvd.nist.gov
/vuln/detail/CVE-2020-17551
advisory
-
impresscms.org
web
Sources
- CVE List CVE-2020-17551
- GitHub Advisory GHSA-j29g-g982-pwpv
- NVD CVE-2020-17551
Fencer Vulns 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.