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Traffic ServerApplication · Apache

CVE-2026-58175

HIGH · 7.5 CVSS v3.1 Published 2026-07-29
Fix available
A fix is available. Upgrade to 9.2.15 / 10.1.4 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click 3 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Apache Traffic Server leaks memory when handling HostDB SRV records. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-401

Allocated memory is never released on some path, so a long-running service or a repeatedly triggered request steadily consumes memory until performance degrades or the process crashes. Attackers exploit it by simply driving the leaking path. Remediation is pairing every allocation with a release and using ownership patterns or tooling to catch what leaks.

General guidance for the memory leak class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Traffic ServerApplication
Affected:>= 8.0.0, <= 8.1.9>= 9.0.0, < 9.2.15>= 10.0.0, < 10.1.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 9.2.15 / 10.1.4 or later
Fixed in 9.2.1510.1.4
Recommended fix High confidence

Upgrade to Apache Traffic Server 9.2.15 or 10.1.4 (choose based on your current major version branch)

  1. 1. Identify the current Apache Traffic Server version by checking the installed package or running 'traffic_server -V'
  2. 2. Stop the Apache Traffic Server service using the appropriate system command (e.g., 'systemctl stop trafficserver' or 'service traffic_server stop')
  3. 3. Back up the Apache Traffic Server configuration directory (typically ats.conf, records.config, and plugin directories)
  4. 4. Remove or uninstall the current Apache Traffic Server package
  5. 5. Install the fixed version: for 9.x branches upgrade to 9.2.15, for 10.x branches upgrade to 10.1.4
  6. 6. Restore the backed-up configuration files to the new installation
  7. 7. Start the Apache Traffic Server service
  8. 8. Verify the service is running and monitor memory usage to confirm the memory leak is resolved

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-58175 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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