CVE catalog
CVE-2026-49017
In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buf
- Severity
- High · CVSS 7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.36% · Oct 25, 2026
In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0.
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 | swift | sid | 2.38.2-3 | fixed |
| Debian | swift | forky | 2.38.2-3 | fixed |
| Debian | swift | trixie | 2.35.1-0+deb13u3 | fixed |
| Debian | swift | trixie-security | 2.35.1-0+deb13u4 | fixed |
| Debian | swift | bookworm | 2.30.1-0+deb12u1 | not affected |
| Debian | swift | bookworm-security | 2.30.1-0+deb12u3 | not affected |
| Cpe | swift | Not reported | 2.37.2 | fixed |
| Ubuntu | swift | 26.04 | 2.36.0-0ubuntu1 | vulnerable |
| Ubuntu | swift | 26.04 | 2.37.0-0ubuntu1 | vulnerable |
| Ubuntu | swift | 26.04 | 2.37.1-0ubuntu2 | vulnerable |
| Ubuntu | swift | 26.04 | 2.37.1-0ubuntu2.1 | fixed |
| Ubuntu | swift | 25.10 | 2.35.0-0ubuntu1 | vulnerable |
| Ubuntu | swift | 25.10 | 2.35.0+git2025070714.1428eb3b5-0ubuntu1 | vulnerable |
| Ubuntu | swift | 25.10 | 2.36.0-0ubuntu1 | vulnerable |
| Ubuntu | swift | 25.10 | 2.36.0-0ubuntu1.1 | vulnerable |
| Ubuntu | swift | 26.04 | 2.36.0-0ubuntu1 | vulnerable |
| Ubuntu | swift | 26.04 | 2.37.0-0ubuntu1 | vulnerable |
| Ubuntu | swift | 26.04 | 2.37.1-0ubuntu2 | vulnerable |
| Ubuntu | swift | 26.04 | 2.37.1-0ubuntu2.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | swift | source | sid | 2.37.1-4 | not yet assigned | Not reported | [1138170] |
| Debian | swift | source | forky | 2.37.1-4 | not yet assigned | Not reported | [1138170] |
| Debian | swift | source | trixie | 2.35.1-0+deb13u2 | not yet assigned | Not reported | [1138170] |
| Debian | swift | source | bookworm | Not affected | unimportant | Not reported | [1138170] |
| Cpe | swift | cpe | Not reported | 2.37.2 | Not reported | NVD-CVE-2026-49017 | Not reported |
| Ubuntu | swift | deb | 26.04 | 2.37.1-0ubuntu2.1 | Not reported | USN-8821-1 | Not reported |
| Ubuntu | swift | deb | 26.04 | 2.37.1-0ubuntu2.1 | Not reported | UBUNTU-CVE-2026-49017 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-swift]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift]Not affected
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-account]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-container]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-doc]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-drive-audit]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-object]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-object-expirer]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
- [swift-proxy]Not affected
Source package: [swift]
Details (4)
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u1· all · bookwormNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
2.30.1-0+deb12u2· all · bookworm-securityNot affected
nvd · swift · debian · bookworm
[Debian 13 (Trixie)]
- [python3-swift]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift]Fixed
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-account]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-container]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-doc]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-drive-audit]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-object]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-object-expirer]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
- [swift-proxy]Fixed
Source package: [swift]
Details (6)
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixieFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-security · Historical versionFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u3· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
2.35.1-0+deb13u4· all · trixie-securityFixed · Fixed:
2.35.1-0+deb13u2nvd · swift · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-49017]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-49017]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-49017]
- [https://osv.dev/vulnerability/USN-8821-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-49017]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49017.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]