CVE catalog
CVE-2026-54171
Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.43% · Oct 25, 2026
Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ruby-excon | sid | 1.8.0-1 | fixed |
| Debian | ruby-excon | forky | 1.8.0-1 | fixed |
| Debian | ruby-excon | trixie | 0.112.0-4 | vulnerable |
| Debian | ruby-excon | bookworm | 0.88.0-1 | vulnerable |
| Rubygems | excon | Not reported | 1.5.0 | fixed |
| Cpe | ruby-excon | Not reported | Not reported | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ruby-excon | source | sid | 1.5.0-1 | not yet assigned | Not reported | Not reported |
| Debian | ruby-excon | source | forky | 1.5.0-1 | not yet assigned | Not reported | Not reported |
| Debian | ruby-excon | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | ruby-excon | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Rubygems | excon | rubygems | Not reported | 1.5.0 | Not reported | Not reported | Not reported |
Notes
[trixie] ruby-excon: Minor issue [bookworm] ruby-excon: Minor issue, infoleak
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ruby-excon]Affected
Details (2)
0.88.0-1· all · bookwormAffected
nvd · ruby-excon · debian · bookworm; nvd · ruby-excon · debian · 12
0.88.0-1· all · bookwormAffected
nvd · ruby-excon · debian · bookworm; nvd · ruby-excon · debian · 12
[Debian 13 (Trixie)]
- [ruby-excon]Affected
Details (2)
0.112.0-4· all · trixieAffected
nvd · ruby-excon · debian · 13
0.112.0-4· all · trixieAffected
nvd · ruby-excon · debian · 13
Observed:
References
- [https://github.com/advisories/GHSA-48rx-c7pg-q66r]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-54171]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-54171]
- [https://security-tracker.debian.org/tracker/CVE-2026-54171]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54171.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]