CVE-2020-12666: fedoraproject fedora URL Redirection to Untrusted Site
Vulnerability summary
CVE-2020-12666 is a medium (CVSS 6.1) URL Redirection to Untrusted Site vulnerability in fedoraproject fedora. EPSS estimates a 1.41% chance of exploitation in the next 30 days, higher than 72.6% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 05-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
macaron before 1.3.7 has an open redirect in the static handler, as demonstrated by the http://127.0.0.1:4000//example.com/ URL.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · GoEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.41%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.41% on 04-10-2026
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 foundMacaron
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Fedoraproject1 product
- fedoraEOL32
Go-macaron1 product
- macaron< 1.3.7
Gopkg.in1 product
- macaron.v1< 1.3.7
3 vendors · 3 products
References
11 links- github.com/go-macaron/macaron/releases/tag/v1.3.7X Refsource MISCWEBRelease NotesThird Party Advisory
