TS
Product
Traffic Server
by Apache · last CVE Jul 29, 2026
120
CVEs
0
On KEV
10.0
Max CVSS
0
New 30D
Severity mix
Critical 21High 75Medium 20Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2024-50305
7.5
1%
Nov 14
Valid Host header field can cause Apache Traffic Server to crash on some platforms
Affected: 9.0.0 before 9.2.6
CVE-2024-38479
7.5
1%
Nov 14
Improper Input Validation vulnerability in Apache Traffic Server
Affected: 8.0.0 through 8.1.11; 9.0.0 before 9.2.6
CVE-2024-35161
7.5
1%
Jul 26
Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers
Affected: 8.0.0 before 8.1.11; 9.0.0 before 9.2.5
CVE-2023-38522
7.5
1%
Jul 26
Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers
Affected: 8.0.0 before 8.1.11; 9.0.0 before 9.2.5
CVE-2024-31309
7.5
95%
Apr 10
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
Affected: 8.0.0 before 8.1.10; 9.0.0 before 9.2.4
CVE-2023-41752
7.5
2%
Oct 17
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Traffic Server.This issue affects Apache Traffic Server: from 8.0.0 through 8.1.8, from 9.0.0…
Affected: 8.0.0 before 8.1.9; 9.0.0 before 9.2.3
CVE-2023-39456
7.5
58%
Oct 17
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
Affected: 9.0.0 before 9.2.3
CVE-2022-47185
7.5
2%
Aug 9
Improper input validation vulnerability on the range header in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1
Affected: 8.0.0 through 8.1.7; 9.0.0 through 9.2.1
CVE-2023-33933
7.5
2%
Jun 14
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: from 8.0.0…
Affected: 8.0.0 before 8.1.7; 9.0.0 before 9.2.1
CVE-2023-30631
7.5
2%
Jun 14
Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.  The configuration option proxy.config.http.push_method_enabled didn't function. …
Affected: 8.0.0 before 8.1.7; 9.0.0 before 9.2.1
CVE-2022-47184
7.5
1%
Jun 14
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: 8.0.0 to…
Affected: 8.0.0 before 8.1.7; 9.0.0 before 9.2.1
CVE-2022-32749
7.5
1%
Dec 19
Improper Check for Unusual or Exceptional Conditions vulnerability handling requests in Apache Traffic Server allows an attacker to crash the server under certain conditions
Affected: 8.0.0 before 8.1.6; 9.0.0 before 9.1.4
CVE-2022-31779
7.5
2%
Aug 10
Improper HTTP/2 scheme and method validation
Affected: 8.0.0 through 8.1.4; 9.0.0 through 9.1.2
CVE-2022-25763
7.5
2%
Aug 10
Improper input validation on HTTP/2 headers
Affected: 8.0.0 before 8.1.5; 9.0.0 before 9.1.3
CVE-2022-28129
7.5
2%
Aug 10
Insufficient Validation of HTTP/1.x Headers
Affected: 8.0.0 through 8.1.4; 9.0.0 through 9.1.2
CVE-2022-31780
7.5
2%
Aug 10
HTTP/2 framing vulnerabilities
Affected: 8.0.0 through 8.1.4; 9.0.0 through 9.1.2
CVE-2022-31778
7.5
2%
Aug 10
Transfer-Encoding not treated as hop-by-hop
Affected: 8.0.0 through 8.1.4; 9.0.0 through 9.1.2
CVE-2021-37150
7.5
2%
Aug 10
Protocol vs scheme mismatch
Affected: 8.0.0 through 8.1.4; 9.0.0 through 9.1.2
CVE-2021-44040
7.5
2%
Mar 23
Improper Input Validation vulnerability in request line parsing of Apache Traffic Server allows an attacker to send invalid requests
Affected: 8.0.0 through 8.1.3; 9.0.0 through 9.1.1
CVE-2021-41585
7.5
2%
Nov 3
Improper Input Validation vulnerability in accepting socket connections in Apache Traffic Server allows an attacker to make the server stop accepting new connections
Affected: 8.0.0 through 8.1.2; 9.0.0 through 9.1.0
CVE-2021-37149
7.5
3%
Nov 3
Improper Input Validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests
Affected: 8.0.0 through 8.1.2; 9.0.0 through 9.1.0
CVE-2021-37148
7.5
3%
Nov 3
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests
Affected: 8.0.0 through 8.1.2; 9.0.0 through 9.0.1
CVE-2021-37147
7.5
3%
Nov 3
Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests
Affected: 8.0.0 through 8.1.2; 9.0.0 through 9.1.0
CVE-2021-32567
7.5
2%
Jun 30
Improper Input Validation vulnerability in HTTP/2 of Apache Traffic Server allows an attacker to DOS the server
Affected: 7.0.0 through 7.1.12; 8.0.0 through 8.1.1; 9.0.0 through 9.0.1
CVE-2021-32566
7.5
2%
Jun 30
Improper Input Validation vulnerability in HTTP/2 of Apache Traffic Server allows an attacker to DOS the server
Affected: 7.0.0 through 7.1.12; 8.0.0 through 8.1.1; 9.0.0 through 9.0.1
CVE-2021-32565
7.5
2%
Jun 29
Invalid values in the Content-Length header sent to Apache Traffic Server allows an attacker to smuggle requests
Affected: 7.0.0 through 7.1.12; 8.0.0 through 8.1.1; 9.0.0 through 9.0.1
CVE-2021-27577
7.5
3%
Jun 29
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache
Affected: 7.0.0 through 7.1.12; 8.0.0 through 8.1.1; 9.0.0 through 9.0.1
CVE-2021-27737
7.5
4%
May 14
Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin
Affected: 9.0.0
CVE-2020-17509
7.5
2%
Jan 11
ATS negative cache option is vulnerable to a cache poisoning attack
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.10; 8.0.0 through 8.0.7
CVE-2020-17508
7.5
2%
Jan 11
The ATS ESI plugin has a memory disclosure vulnerability
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.11; 8.0.0 through 8.1.0
CVE-2020-9494
7.5
4%
Jun 24
Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large…
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.10; 8.0.0 through 8.0.7
CVE-2020-9481
7.5
2%
Apr 27
Apache ATS 6.0.0 to 6.2.3, 7.0.0 to 7.1.9, and 8.0.0 to 8.0.6 is vulnerable to a HTTP/2 slow read attack
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.9; 8.0.0 through 8.0.6
CVE-2019-10079
7.5
5%
Oct 22
Apache Traffic Server is vulnerable to HTTP/2 setting flood attacks
Affected: before 7.1.7; 8.0.0 before 8.0.4
CVE-2019-9518
7.5
25%
Aug 13
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2019-9517
7.5
28%
Aug 13
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2019-9515
7.5
87%
Aug 13
Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2019-9514
7.5
83%
Aug 13
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2019-9513
7.5
82%
Aug 13
Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2019-9512
7.5
83%
Aug 13
Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2019-9511
7.5
60%
Aug 13
Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2018-11783
7.5
2%
Mar 7
sslheaders plugin extracts information from the client certificate and sets headers in the request based on the configuration of the plugin
Affected: 6.0.0 through 6.0.3; 7.0.0 through 7.1.5; 8.0.0 through 8.0.1
CVE-2018-8022
7.5
7%
Aug 29
A carefully crafted invalid TLS handshake can cause Apache Traffic Server (ATS) to segfault
Affected: 6.0.0 through 6.2.2
CVE-2018-1318
7.5
8%
Aug 29
Adding method ACLs in remap.config can cause a segfault when the user makes a carefully crafted request
Affected: 6.0.0 through 6.2.2; 7.0.0 through 7.1.3
CVE-2017-7671
7.5
2%
Feb 27
There is a DOS attack vulnerability in Apache Traffic Server (ATS) 5.2.0 to 5.3.2, 6.0.0 to 6.2.0, and 7.0.0 with the TLS handshake
Affected: 5.2.0 through 5.3.2; after 6.0.0 through 6.2.0; 7.0.0
CVE-2017-5659
7.5
3%
Apr 17
Apache Traffic Server before 6.2.1 generates a coredump when there is a mismatch between content length and chunked encoding
Affected: through 6.2.0
CVE-2016-5396
7.5
3%
Apr 17
Apache Traffic Server 6.0.0 to 6.2.0 are affected by an HPACK Bomb Attack
Affected: 6.0.0; 6.1.0; 6.1.1; 6.2.0
CVE-2026-58160
6.5
1%
Jul 29
Apache Traffic Server: Out-of-bounds reads while parsing DNS responses
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2018-9481
6.5
0%
Nov 20
In bta_hd_set_report_act of bta_hd_act.cc, there is a possible out-of-bounds read due to an integer overflow
Affected: 6.0.0 through 6.2.3; 7.0.0 before 7.1.10; 8.0.0 before 8.0.7
CVE-2019-9516
6.5
56%
Aug 13
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.6; 8.0.0 through 8.0.3
CVE-2018-8004
6.5
6%
Aug 29
There are multiple HTTP smuggling and cache poisoning issues when clients making malicious requests interact with Apache Traffic Server (ATS)
Affected: 6.0.0 through 6.2.2; 7.0.0 through 7.1.3
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