
CVE catalog
CVE-2026-59173
Uncontrolled Resource Consumption vulnerability in…
Uncontrolled Resource Consumption vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.13, from 10.0.0 through 10.1.2. Users are recommended to upgrade to version 9.1.14 or 10.1.3, which fixes the issue.
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.74% · Oct 27, 2026
Projects and upstream resources
Reported versions and fixes
Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.
| Distribution / release | Package | Version | Status | Source |
|---|---|---|---|---|
| Ubuntupro | trafficserver | 8.1.1+ds-1.1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2build1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2ubuntu0.1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2ubuntu0.1+esm1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2ubuntu0.1~esm1 | Affected | [UBUNTU-CVE-2026-59173] |
| Debianbookworm-security | trafficserver | 9.2.5+ds-0+deb12u4 | Affected | [CVE-2026-59173] |
| Debianbookworm | trafficserver | Not reported | AffectedDistribution reports no fix | [CVE-2026-59173] |
| Debianbookworm | trafficserver | 9.2.5+ds-0+deb12u4 | Affected | [CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.1+ds-1build1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.2+ds-1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1+deb12u1 | Affected | [UBUNTU-CVE-2026-59173] |
Showing 12 observations. All 23 observations, including unknown and conflicting reports, are available below.
Provider details and historical evidence
| Distribution / release | Package | Version | Status | Source |
|---|---|---|---|---|
| UnknownRelease not reported | trafficserver | Not reported | UnknownSource applicability is not established | Provider not reported |
| Debianbookworm | trafficserver | Not reported | AffectedDistribution reports no fix | [CVE-2026-59173] |
| Debianbookworm | trafficserver | 9.2.5+ds-0+deb12u4 | Affected | [CVE-2026-59173] |
| Debianbookworm-security | trafficserver | 9.2.5+ds-0+deb12u4 | Affected | [CVE-2026-59173] |
| Ubuntu16.04 | trafficserver | 5.3.0-2ubuntu1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu16.04 | trafficserver | 5.3.0-2ubuntu2 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu18.04 | trafficserver | 7.0.0-5 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu18.04 | trafficserver | 7.1.2+ds-2 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu18.04 | trafficserver | 7.1.2+ds-2build1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu18.04 | trafficserver | 7.1.2+ds-3 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.1+ds-1build1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.2+ds-1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1+deb12u1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1+deb12u1build1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1+deb12u1build3 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1+deb12u1build4 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntu24.04 | trafficserver | 9.2.3+ds-1+deb12u1ubuntu0.1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 8.1.1+ds-1.1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2build1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2ubuntu0.1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2ubuntu0.1+esm1 | Affected | [UBUNTU-CVE-2026-59173] |
| Ubuntupro | trafficserver | 9.1.1+ds-2ubuntu0.1~esm1 | Affected | [UBUNTU-CVE-2026-59173] |
Original provider fields
{
"package_releases": [
{
"name": "trafficserver",
"status": "vulnerable",
"release": "bookworm",
"version": "9.2.5+ds-0+deb12u4"
},
{
"name": "trafficserver",
"status": "vulnerable",
"release": "bookworm-security",
"version": "9.2.5+ds-0+deb12u4"
}
],
"fixed_versions": [
{
"bug": 1142387,
"name": "trafficserver",
"type": "source",
"origin": null,
"release": "bookworm",
"urgency": "not yet assigned",
"fixed_version": ""
}
],
"distribution_packages": [
{
"name": "trafficserver",
"fixed_version": "not yet fixed",
"applicability_unknown": true
},
{
"name": "trafficserver",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"release": "16.04",
"versions": [
"5.3.0-2ubuntu1",
"5.3.0-2ubuntu2"
],
"ecosystem": "deb",
"provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-59173",
"fixed_version": "",
"provider_source": "pypi",
"provider_record_id": "UBUNTU-CVE-2026-59173",
"provider_updated_at": "2026-07-29T10:18:19.244665612Z"
},
{
"name": "trafficserver",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"release": "18.04",
"versions": [
"7.0.0-5",
"7.1.2+ds-2",
"7.1.2+ds-2build1",
"7.1.2+ds-3"
],
"ecosystem": "deb",
"provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-59173",
"fixed_version": "",
"provider_source": "pypi",
"provider_record_id": "UBUNTU-CVE-2026-59173",
"provider_updated_at": "2026-07-29T10:18:19.244665612Z"
},
{
"name": "trafficserver",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"release": "pro",
"versions": [
"8.1.1+ds-1.1",
"9.1.1+ds-2build1",
"9.1.1+ds-2ubuntu0.1~esm1",
"9.1.1+ds-2ubuntu0.1",
"9.1.1+ds-2ubuntu0.1+esm1"
],
"ecosystem": "deb",
"provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-59173",
"fixed_version": "",
"provider_source": "pypi",
"provider_record_id": "UBUNTU-CVE-2026-59173",
"provider_updated_at": "2026-07-29T10:18:19.244665612Z"
},
{
"name": "trafficserver",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"release": "24.04",
"versions": [
"9.2.1+ds-1build1",
"9.2.2+ds-1",
"9.2.3+ds-1",
"9.2.3+ds-1+deb12u1",
"9.2.3+ds-1+deb12u1build1",
"9.2.3+ds-1+deb12u1build3",
"9.2.3+ds-1+deb12u1build4",
"9.2.3+ds-1+deb12u1ubuntu0.1"
],
"ecosystem": "deb",
"provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-59173",
"fixed_version": "",
"provider_source": "pypi",
"provider_record_id": "UBUNTU-CVE-2026-59173",
"provider_updated_at": "2026-07-29T10:18:19.244665612Z"
},
{
"name": "traffic_server",
"ranges": [
{
"fixed": "10.1.3",
"introduced": "10.0.0",
"last_affected": "",
"start_excluding": ""
}
],
"ecosystem": "cpe",
"provider_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59173",
"fixed_version": "10.1.3",
"provider_source": "nvd",
"provider_record_id": "NVD-CVE-2026-59173",
"provider_updated_at": "2026-10-24T20:10:00.137"
}
]
}Publisher notes
[bookworm] trafficserver: Minor issue, DoS
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [trafficserver]Unknown
Details (4)
9.2.5+ds-0+deb12u4· amd64 · bookwormAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookwormAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· amd64 · bookworm-securityAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookworm-securityAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
- [trafficserver-dev]Unknown
Source package: [trafficserver]
Details (4)
9.2.5+ds-0+deb12u4· amd64 · bookwormAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookwormAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· amd64 · bookworm-securityAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookworm-securityAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
- [trafficserver-experimental-plugins]Unknown
Source package: [trafficserver]
Details (4)
9.2.5+ds-0+deb12u4· amd64 · bookwormAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookwormAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· amd64 · bookworm-securityAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookworm-securityAffected
nvd · trafficserver · debian · bookworm; nvd · trafficserver · debian · 12
Observed:
References
- [http://www.openwall.com/lists/oss-security/2026/07/17/5]
- [https://lists.apache.org/thread/lhlbhphmv5dsfgx1fx84mgonzbocpzhd]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-59173]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-59173]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-59173]
- [https://security-tracker.debian.org/tracker/CVE-2026-59173]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2388.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]