Traffic Server
Vendor:
First CVE: Sep 13, 2010 · Active for 15 years
83
Total CVEs
More Total CVEs than 99% of tracked products
5.9
Avg CVEs / Year
Higher CVE frequency than 90% of tracked products
7.5
Avg CVSS
Higher Avg CVSS than 59% of tracked products
1.2%
KEV Rate
Higher KEV Rate than 96% of tracked products
Trends Over Time
The number and severity of CVEs published that impact Traffic Server over time
Volume of CVEsAvg CVSS Base Score
First CVE
Sep 13, 2010
15 years ago
Most Recent CVE
Jul 18, 2026
7 days ago
CVE Severity & Scoring
Traffic Server83 CVEs
17%
70%
13%
All CVEs352,708 CVEs
45%
40%
11%
MediumHighCritical
Attack Vector
Local0 (0.0%)
Network78 (94.0%)
Unknown4 (4.8%)
Physical0 (0.0%)
Adjacent Network1 (1.2%)
Attack Complexity
Low77 (92.8%)
High2 (2.4%)
Unknown4 (4.8%)
User Interaction
None78 (94.0%)
Unknown4 (4.8%)
Required1 (1.2%)
Privileges Required
Low6 (7.2%)
High0 (0.0%)
None73 (88.0%)
Unknown4 (4.8%)
Top CVEs
Signals from CVEs in this product scope (83 CVEs).
83 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2023-44487HIGH The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through | Oct 10, 2023 | 7.5 | 97 | YES | YES |
CVE-2024-31309HIGH HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server. Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.
U | Apr 10, 2024 | 7.5 | 74 | NO | NO |
CVE-2019-9515HIGH Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RF | Aug 13, 2019 | 7.5 | 66 | NO | NO |
CVE-2019-9514HIGH Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over ea | Aug 13, 2019 | 7.5 | 65 | NO | NO |
CVE-2019-9513HIGH Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the | Aug 13, 2019 | 7.5 | 65 | NO | NO |
CVE-2019-9512HIGH Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to bui | Aug 13, 2019 | 7.5 | 65 | NO | NO |
CVE-2019-9511HIGH Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a l | Aug 13, 2019 | 7.5 | 52 | NO | NO |
CVE-2023-39456HIGH Improper Input Validation vulnerability in Apache Traffic Server with malformed HTTP/2 frames.This issue affects Apache Traffic Server: from 9.0.0 through 9.2.2.
Users are recomme | Oct 17, 2023 | 7.5 | 50 | NO | NO |
CVE-2019-9516MEDIUM Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-le | Aug 13, 2019 | 6.5 | 44 | NO | NO |
CVE-2026-59173HIGH 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 a | Jul 18, 2026 | 7.5 | 37 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (83 CVEs).
CISA KEV
1 CVE
1.2% of CVEs· 96th percentile
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
1 CVE
1.2% of CVEs· 87th percentile
Social Chatter
Signals from CVEs in this product scope (83 CVEs).
Media Mentions
Signals from CVEs in this product scope (83 CVEs).
Top CNAs Publishing CVEs For Traffic Server
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 9.0.0 | 1 | 7.5 | 3.8% | 0 | 0 |
| 7.0.0 | 2 | 8.4 | 2.0% | 0 | 0 |
| 6.2.2 | 1 | 8.6 | 2.0% | 0 | 0 |
| 6.2.1 | 1 | 8.6 | 2.0% | 0 | 0 |
| 6.2.0 | 1 | 7.5 | 2.9% | 0 | 0 |
| 6.1.1 | 1 | 7.5 | 2.9% | 0 | 0 |
| 6.1.0 | 1 | 7.5 | 2.9% | 0 | 0 |
| 6.0.0 | 1 | 7.5 | 2.9% | 0 | 0 |
| 5.3.1 | 2 | 9.8 | 2.4% | 0 | 0 |
| 5.3.0 | 3 | 9.8 | 3.4% | 0 | 0 |
| 5.1.0 | 1 | 9.8 | 3.8% | 0 | 0 |
| 5.0.0 | 1 | 10.0 | 4.5% | 0 | 0 |
| 4.2.1 | 1 | 10.0 | 4.5% | 0 | 0 |
| 4.2.0 | 1 | 10.0 | 4.5% | 0 | 0 |
| 4.1.0 | 1 | 10.0 | 4.5% | 0 | 0 |
| 4.0.1 | 1 | 10.0 | 4.5% | 0 | 0 |
| 3.3.5 | 1 | 10.0 | 4.5% | 0 | 0 |
| 3.3.4 | 1 | 10.0 | 4.5% | 0 | 0 |
| 3.3.3 | 1 | 10.0 | 4.5% | 0 | 0 |
| 3.3.2 | 1 | 10.0 | 4.5% | 0 | 0 |