Bug 2450543 (CVE-2026-33170)
| Summary: | CVE-2026-33170 Rails: Active Support: Active Support: Cross-Site Scripting (XSS) due to improper HTML safety flag propagation in SafeBuffer#% | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | anthomas, ehelms, ggainey, juwatts, mhulan, nmoumoul, osousa, pcreech, rchan, smallamp, tmalecek |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Active Support, a toolkit of support libraries for the Rails framework. When a `SafeBuffer` is modified in place and subsequently formatted with untrusted input, the `@html_unsafe` flag is not correctly propagated. This improper handling causes the buffer to incorrectly report as safe, bypassing ERB auto-escaping. A remote attacker could exploit this Cross-Site Scripting (XSS) vulnerability to inject malicious scripts into web pages viewed by other users.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-03-24 00:01:58 UTC
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