CVE-2021-42342
9.8
CRITICAL · CVSS 3.1 · EPSS 59.5% (pctl 99)
Patch early
EPSS 59.5% — above the 10% action threshold.
Description
An issue was discovered in GoAhead 4.x and 5.x before 5.1.5. In the file upload filter, user form variables can be passed to CGI scripts without being prefixed with the CGI prefix. This permits tunneling untrusted environment variables into vulnerable CGI scripts.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 59.46% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-434 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-10-14 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| embedthis | goahead |
References
→ the Explorer · watch your stack · NVD