CVE-2026-65100

Q: How do I fix CVE-2026-65100?

Upgrade traffic server to 10.1.4 or later.

Q: Is CVE-2026-65100 being actively exploited?

Not that we know of. CVE-2026-65100 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.45% is the estimated probability that it will be exploited in the next 30 days. That is higher than 37% of all scored CVEs.

Q: How severe is CVE-2026-65100?

CVE-2026-65100 has a CVSS v3 base score of 4.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-65100 affect?

Published advisories record a fix for traffic server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

4.8

CVSS v3

NVD

Description

Apache Traffic Server updates the HTTP/2 HPACK dynamic table before confirming the header block encoded successfully, so an encode failure leaves the encoder out of sync with the peer decoder and corrupts subsequent header blocks on the connection. 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.

CWE-696

How to fix

Remediation Available

traffic serverNVD

Affected:>= 10.0.0, < 10.1.4Fixed in:10.1.4CVE-2026-65100derived from NVD

Affected:>= 9.0.0, < 9.2.15Fixed in:9.2.15CVE-2026-65100derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.45%probability of exploitation in 30 days

37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Vendor Advisory1

lists.apache.org

Related Vulnerabilities

Other CWE-696 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-33224	High	7.2	2.8%	-	Fix
CVE-2021-22569	High	7.5	1.7%	-	Fix
CVE-2021-31379	High	7.5	1.3%	-	-
CVE-2023-44386	Medium	5.3	0.6%	-	Fix
CVE-2025-31485	High	7.5	0.6%	-	-
CVE-2025-0150	High	7.1	0.5%	-	Fix

Common questions

How do I fix CVE-2026-65100?

Upgrade traffic server to 10.1.4 or later.

Is CVE-2026-65100 being actively exploited?

Not that we know of. CVE-2026-65100 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.45% is the estimated probability that it will be exploited in the next 30 days. That is higher than 37% of all scored CVEs.

How severe is CVE-2026-65100?

CVE-2026-65100 has a CVSS v3 base score of 4.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-65100 affect?

Published advisories record a fix for traffic server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-65100

Markdown

[![CVE-2026-65100](https://tridentstack.com/cve/badge/CVE-2026-65100.svg)](https://tridentstack.com/cve/CVE-2026-65100)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-65100"><img src="https://tridentstack.com/cve/badge/CVE-2026-65100.svg" alt="CVE-2026-65100"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-03.