CVE-2026-26962
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
Rack's improper unfolding of folded multipart headers preserves CRLF in parsed parameter values
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-26962
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-26962.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 3.2.6-2 |
| debian | sid | fixed | 3.2.6-2 |
| debian | trixie | affected | |
References
- https://github.com/rack/rack/security/advisories/GHSA-rx22-g9mx-qrhv
- https://www.suse.com/security/cve/CVE-2026-26962.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-26962
- https://github.com/rack/rack
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-26962.yml
- https://security-tracker.debian.org/tracker/CVE-2026-26962
- https://github.com/advisories/GHSA-rx22-g9mx-qrhv
Verify integrity in audit chain (admin only). AS-IS.