CVE-2026-59173Patch(apache / traffic_server)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch apache traffic_server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

Weakness type (CWE)

CWE-400

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

traffic_server

Threat summary

Patch or workaround signal is available
9 mentions across 6 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 4 signals
Technical details provided in 8 signals
Disclosure: 3 classified signals
General: 2 classified signals
Peaked 5d ago at 4 mentions (2026-07-18); latest day: 1
9 total mentions across 6 days

Affected systems

Vendors

apache

Products

traffic_server

Deep dive

Activity timeline9 mentions / 6d

Signal classification3 categories

Patch

444.4%

Disclosure

333.3%

General

222.2%

Referenced assets8 URLs

By indicator

Classification over time

Date	Total	Labels

2026-07-18	4	Disclosure2General1Patch1
2026-07-19	1	Disclosure1
2026-07-21	1	Patch1
2026-07-23	1	Patch1
2026-07-24	1	Patch1
2026-08-26	1	General1

Full discourse9 posts

Daily CyberSecurity@Daily_CyberSec88d
Patch
An HTTP/2 DoS vulnerability lets unauthenticated attackers exhaust server memory via stalled flow control. CVE-2026-59762 and CVE-2026-59173 are patched. #HTTP2 #DoS #DenialOfService #CVE202659762 #CVE202659173 #FlowControl #InfoSec #PatchNow http://securityonline.info/http2-dos-vulnerability/
Post summary
The post reports on an HTTP/2 DoS vulnerability and announces that CVE-2026-59762 and CVE-2026-59173 have been patched, but does not provide exploit code or evidence of active exploitation.
00020412
12.9K followersView on X
Open Source Security mailing list@oss_security92d
Disclosure
CERT VU#885548: DoS in HTTP/2 servers via stalled flow-control conditions https://www.openwall.com/lists/oss-security/2026/07/16/5 CVE-2026-59173: Apache Traffic Server is vulnerable to stalled HTTP/2 flow-control https://www.openwall.com/lists/oss-security/2026/07/17/5
Post summary
A new DoS vulnerability (CVE-2026-59173) affecting Apache Traffic Server’s HTTP/2 flow‐control was disclosed, with no evidence of PoC, exploitation, patch, or false positive.
00020472
4.7K followersView on X
ThreatWire@ThreatWire_87d
Patch
🚨 CVE-2026-59762 & CVE-2026-59173: An HTTP/2 DoS vulnerability allows unauthenticated attackers to exhaust server memory through stalled flow control. Both vulnerabilities have been patched. #HTTP2 #DoS #CVE #CyberSecurity
Post summary
Two recently disclosed HTTP/2 DoS CVEs allow memory exhaustion via stalled flow control, but patches are already available for both.
00010112
476 followersView on X
CVE@CVEnew92d
Disclosure
CVE-2026-59173 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… https://www.cve.org/CVERecord?id=CVE-2026-59173
Post summary
A new uncontrolled resource consumption vulnerability (CVE-2026-59173) affecting Apache Traffic Server versions 9.0.0-9.1.13 and 10.0.0 onward was disclosed; details are available via the CVE record, but no PoC, exploit, active exploitation, patch or detailed technical information is provided.
000101.0K
57.8K followersView on X
IntegSec@integ_sec54d
General
CVE-2026-59173: Apache Traffic Server HTTP/2 Denial-of-Service Bug - What It Means for Your Business and How to Respond https://hubs.li/Q04vpjgV0
Post summary
The text refers to CVE-2026-59173, an HTTP/2 DoS issue in Apache Traffic Server, but does not provide PoC, exploit details, or patch guidance.
0000027
33 followersView on X
DFIR Lab@DFIR_Lab90d
Patch
🚨 HIGH severity CVE-2026-59173 (CVSS 7.5) affects Apache Traffic Server 9.0.0-9.1.13 & 10.0.0-10.1.2. Uncontrolled resource consumption vulnerability. Upgrade to 9.1.14 or 10.1.3 immediately. #CVE #PatchNow https://t.co/7TMD42VJ29
Post summary
The tweet announces a high‑severity CVE-2026-59173 affecting Apache Traffic Server, highlights an uncontrolled resource consumption flaw with a CVSS of 7.5, and urges users to upgrade immediately to the patched versions 9.1.14 or 10.1.3.
0000029
88 followersView on X
Infoflowcloud@infoflowcloud92d
Disclosure
🚨*CVE* CVE-2026-59173 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… https://www.cve.org/CVERecord?id=CVE-2026-59173 ----- Traducción: CVE-2026-59173 Vul… http://infoflow.cloud`
Post summary
The post announces CVE-2026-59173, an uncontrolled resource consumption issue affecting certain Apache Traffic Server versions; it provides basic vulnerability details but no exploits, patches, or evidence of active exploitation.
0000048
92 followersView on X
Vulmon Vulnerability Feed@VulmonFeeds93d
General
CVE-2026-59173 Uncontrolled Resource Consumption in Apache Traffic Server 9.0.0 Through 10.1.2 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-59173
Post summary
The post announces CVE-2026-59173 as an uncontrolled resource consumption vulnerability affecting Apache Traffic Server 9.0.0 to 10.1.2, without providing exploitation details or mitigations.
0000092
4.1K followersView on X
VulniPulse@vulnipulse93d
Patch
⚠️ Apache Traffic Server alert: CVE-2026-59173 (Unknown) Attackers could disrupt service or cause a denial of service. Upgrade to a vendor-listed fixed release. https://vulnipulse.com/advisories/apache-cve-2026-59173 #Apache #ApacheTrafficServer #HTTP2 #CyberSecurity #CVE
Post summary
The advisory warns of an unknown denial‑of‑service vulnerability in Apache Traffic Server and urges users to upgrade to the vendor‑listed fixed release.
0000056
6 followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	apache	traffic_server	-	-	-

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What researchers are saying

CVE-2026-59173

IntegSec[verified]@integ_secGeneral

The text refers to CVE-2026-59173, an HTTP/2 DoS issue in Apache Traffic Server, but does not provide PoC, exploit details, or patch guidance.

DFIR Lab[verified]@DFIR_LabPatch

The tweet announces a high‑severity CVE-2026-59173 affecting Apache Traffic Server, highlights an uncontrolled resource consumption flaw with a CVSS of 7.5, and urges users to upgrade immediately to the patched versions 9.1.14 or 10.1.3.

VulniPulse[verified]@vulnipulsePatch

The advisory warns of an unknown denial‑of‑service vulnerability in Apache Traffic Server and urges users to upgrade to the vendor‑listed fixed release.

Daily CyberSecurity@Daily_CyberSecPatch

The post reports on an HTTP/2 DoS vulnerability and announces that CVE-2026-59762 and CVE-2026-59173 have been patched, but does not provide exploit code or evidence of active exploitation.

Open Source Security mailing list@oss_securityDisclosure

A new DoS vulnerability (CVE-2026-59173) affecting Apache Traffic Server’s HTTP/2 flow‐control was disclosed, with no evidence of PoC, exploitation, patch, or false positive.

ThreatWire@ThreatWire_Patch

Two recently disclosed HTTP/2 DoS CVEs allow memory exhaustion via stalled flow control, but patches are already available for both.

CVE@CVEnewDisclosure

A new uncontrolled resource consumption vulnerability (CVE-2026-59173) affecting Apache Traffic Server versions 9.0.0-9.1.13 and 10.0.0 onward was disclosed; details are available via the CVE record, but no PoC, exploit, active exploitation, patch or detailed technical information is provided.

Infoflowcloud@infoflowcloudDisclosure

The post announces CVE-2026-59173, an uncontrolled resource consumption issue affecting certain Apache Traffic Server versions; it provides basic vulnerability details but no exploits, patches, or evidence of active exploitation.