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-2026-58162
10.0
0%
Jul 29
Apache Traffic Server: Certifier plugin trusts client SNI when generating certificates
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58150
10.0
1%
Jul 29
Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-57834
10.0
1%
Jul 29
Apache Traffic Server: Malformed chunked message body allows request smuggling
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58185
9.8
1%
Jul 29
Apache Traffic Server: Use-after-free in the intercept plugin
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58179
9.8
1%
Jul 29
Apache Traffic Server: regex_remap plugin overflows the stack from attacker input
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58177
9.8
1%
Jul 29
Apache Traffic Server: Memory-safety and path-traversal errors in the Cripts framework
Affected: 10.0.0 before 10.1.4
CVE-2021-43082
9.8
2%
Nov 3
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the stats-over-http plugin of Apache Traffic Server allows an attacker to overwrite memory
Affected: 8.0.0 through 8.1.2; 9.0.0 through 9.1.0
CVE-2021-35474
9.8
3%
Jun 30
Stack-based Buffer Overflow vulnerability in cachekey plugin of Apache Traffic Server
Affected: 7.0.0 through 7.1.12; 8.0.0 through 8.1.1; 9.0.0 through 9.0.1
CVE-2020-1944
9.8
3%
Mar 23
There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and Transfer-Encoding and Content length headers
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.8; 8.0.0 through 8.0.5
CVE-2019-17565
9.8
3%
Mar 23
There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and chunked encoding
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.8; 8.0.0 through 8.0.5
CVE-2019-17559
9.8
3%
Mar 23
There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and scheme parsing
Affected: 6.0.0 through 6.2.3; 7.0.0 through 7.1.8; 8.0.0 through 8.0.5
CVE-2015-3249
9.8
5%
Oct 30
The HTTP/2 experimental feature in Apache Traffic Server 5.3.x before 5.3.1 allows remote attackers to cause a denial of service (out-of-bounds access and daemon crash) or…
Affected: 5.3.0
CVE-2014-3624
9.8
4%
Oct 30
Apache Traffic Server 5.1.x before 5.1.1 allows remote attackers to bypass access restrictions by leveraging failure to properly tunnel remap requests using CONNECT
Affected: 5.1.0
CVE-2015-5206
9.8
2%
Sep 13
Unspecified vulnerability in the HTTP/2 experimental feature in Apache Traffic Server before 5.3.x before 5.3.2 has unknown impact and attack vectors, a different vulnerability…
Affected: 5.3.0; 5.3.1
CVE-2015-5168
9.8
2%
Sep 13
Unspecified vulnerability in the HTTP/2 experimental feature in Apache Traffic Server 5.3.x before 5.3.2 has unknown impact and attack vectors, a different vulnerability than…
Affected: 5.3.0; 5.3.1
CVE-2026-58155
9.3
1%
Jul 29
Apache Traffic Server: Header-name length truncation enables header aliasing and request smuggling
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-41920
9.3
1%
Jul 29
Apache Traffic Server: SNI to Host header matching policy is not properly enforced
Affected: 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58163
9.1
1%
Jul 29
Apache Traffic Server: Cache deserialization and lifetime errors can corrupt state or crash the server
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-33267
9.1
1%
Jul 29
Apache Traffic Server: Untrusted @ headers can spoof ATS internal metadata
Affected: 9.2.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2024-50306
9.1
2%
Nov 14
Unchecked return value can allow Apache Traffic Server to retain privileges on startup
Affected: 9.0.0 before 9.2.6; 10.0.0 before 10.0.2
CVE-2023-33934
9.1
2%
Aug 9
Improper Input Validation vulnerability 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-2026-58154
8.9
1%
Jul 29
Apache Traffic Server: Memory-safety errors in MIME and header parsing
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58157
8.7
0%
Jul 29
Apache Traffic Server: Improper server-session reuse can expose data across client connections
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58182
8.6
1%
Jul 29
Apache Traffic Server: ts_lua plugin has initialization and resource-handling errors
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2017-5660
8.6
2%
Feb 27
There is a vulnerability in Apache Traffic Server (ATS) 6.2.0 and prior and 7.0.0 and prior with the Host header and line folding
Affected: through 6.2.0; 6.2.1; 6.2.1; 6.2.2; 6.2.2; 7.0.0; +3 more
CVE-2026-58153
8.3
1%
Jul 29
Apache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafely
Affected: 10.0.0 before 10.1.4
CVE-2026-58188
8.2
1%
Jul 29
Apache Traffic Server: Memory-safety and limit-bypass errors across experimental plugins
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58159
8.2
1%
Jul 29
Apache Traffic Server: Listener and ACL handling allow access-control bypass
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2024-35296
8.2
1%
Jul 26
Invalid Accept-Encoding header can cause Apache Traffic Server to fail cache lookup and force forwarding requests
Affected: 8.0.0 before 8.1.11; 9.0.0 before 9.2.5
CVE-2021-44759
8.1
2%
Mar 23
Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack
Affected: 8.0.0 through 8.1.0
CVE-2021-38161
8.1
2%
Nov 3
Improper Authentication vulnerability in TLS origin verification of Apache Traffic Server allows for man in the middle attacks
Affected: 8.0.0 through 8.0.8
CVE-2026-58189
7.5
1%
Jul 29
Apache Traffic Server: Plugins resetting the redirect counter enable SSRF amplification
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58187
7.5
1%
Jul 29
Apache Traffic Server: Multiplexer plugin chunk decoder enables a denial of service
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58186
7.5
1%
Jul 29
Apache Traffic Server: webp_transform plugin decodes unsafely and mislabels degraded responses
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58184
7.5
1%
Jul 29
Apache Traffic Server: header_rewrite plugin cookie handling can corrupt memory
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58183
7.5
1%
Jul 29
Apache Traffic Server: prefetch plugin can crash on attacker-influenced input
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58181
7.5
1%
Jul 29
Apache Traffic Server: uri_signing and url_sig plugins can exhaust the stack or crash
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58180
7.5
1%
Jul 29
Apache Traffic Server: txn_box plugin overflows the stack from attacker input
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58178
7.5
1%
Jul 29
Apache Traffic Server: ESI plugin allows uncontrolled recursion and server-side request forgery
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58175
7.5
1%
Jul 29
Apache Traffic Server: HostDB SRV handling leaks memory
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58164
7.5
1%
Jul 29
Apache Traffic Server: Remap configuration lifetime and TOCTOU errors cause use-after-free
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58161
7.5
1%
Jul 29
Apache Traffic Server: Memory-safety errors in TLS and SNI handling can crash the server
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-65324
7.5
1%
Jul 29
Apache Traffic Server: HTTP/2 and HTTP/3 dechunking removes per-stream buffer cap, allowing memory exhaustion
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-58151
7.5
1%
Jul 29
Apache Traffic Server: Abusive HTTP/2 framing can exhaust resources and crash the server
Affected: 8.0.0 through 8.1.9; 9.0.0 before 9.2.15; 10.0.0 before 10.1.4
CVE-2026-59173
7.5
1%
Jul 18
Apache Traffic Server: DoS vulnerability in HTTP/2 via stalled flow-control conditions
Affected: 9.0.0 before 9.2.14; 10.0.0 before 10.1.3
CVE-2025-65114
7.5
0%
Apr 2
Apache Traffic Server: Malformed chunked message body allows request smuggling
Affected: 9.0.0 before 9.2.13; 10.0.0 before 10.1.2
CVE-2025-58136
7.5
1%
Apr 2
Apache Traffic Server: A simple legitimate POST request causes a crash
Affected: 9.0.0 before 9.2.13; 10.0.0 before 10.1.2
CVE-2025-49763
7.5
1%
Jun 19
ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted
Affected: 9.0.0 before 9.2.11; 10.0.0 before 10.0.6
CVE-2025-31698
7.5
1%
Jun 19
ACL configured in ip_allow.config or remap.config does not use IP addresses that are provided by PROXY protocol
Affected: 9.0.0 before 9.2.11; 10.0.0 before 10.0.6
CVE-2024-53868
7.5
1%
Apr 3
Apache Traffic Server allows request smuggling if chunked messages are malformed.  This issue affects Apache Traffic Server: from 9.2.0 through 9.2.9, from 10.0.0 through…
Affected: 9.0.0 before 9.2.10; 10.0.0 before 10.0.5
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