Bug 2443260 (CVE-2026-28367)
| Summary: | CVE-2026-28367 undertow: Undertow: Request smuggling via `\r\r\r` as a header block terminator | ||
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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: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | abrianik, aschwart, asoldano, bbaranow, bmaxwell, boliveir, brian.stansberry, bstansbe, darran.lofthouse, dhanak, dlofthou, dosoudil, drosa, fjuma, fmariani, ggrzybek, gmalinko, ibek, istudens, ivassile, iweiss, janstey, jrokos, kverlaen, mnovotny, mosmerov, mposolda, msvehla, nwallace, parichar, pberan, pdelbell, pesilva, pjindal, pmackay, rmartinc, rstancel, rstepani, sausingh, security-response-team, smaestri, ssilvert, sthorger, tasato, tcunning, thjenkin, tom.jenkinson, vdosoudi, vmuzikar, yfang |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending `\r\r\r` as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer, potentially leading to unauthorized access or manipulation of web requests.
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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
2026-02-27 04:44:46 UTC
This issue has been addressed in the following products: Red Hat JBoss Enterprise Application Platform 8.1 Via RHSA-2026:25126 https://access.redhat.com/errata/RHSA-2026:25126 This issue has been addressed in the following products: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 Via RHSA-2026:25125 https://access.redhat.com/errata/RHSA-2026:25125 |