traffic server CVEs · Critical

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Overview 16 matches · 0 in Waratek scope · 0 protected · 0 exploited · 0 CISA KEV · 0 public PoC · 0 EPSS ≥ 0.5

16matches 0in Waratek scope0.0% 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 0public PoC0.0% 0EPSS ≥ 0.50.0%

Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 0 0.0% Not applicable 16 100.0% Withdrawn CVE 0 0.0%

Critical 16 100.0% High 0 0.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%

blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 16 100.0% not established 0 0.0% unrecorded 0 0.0%

Exploited 0 0.0% Working exploit published 0 0.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 16 100.0%

split by StatusSeverityProtectionExploit maturity peak 4 / year

20174 Not applicable4 Critical4 not blocked4 No public exploit4 20180 20190 20203 Not applicable3 Critical3 not blocked3 No public exploit3 20212 Not applicable2 Critical2 not blocked2 No public exploit2 20220 20231 Not applicable1 Critical1 not blocked1 No public exploit1 20242 Not applicable2 Critical2 not blocked2 No public exploit2 20250 20264 Not applicable4 Critical4 not blocked4 No public exploit4

2017201820192020202120222023202420252026

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CVE	Severity	Published▾	Status	Exploitation	Description
CVE-2026-58179	Critical	2026-07-29	Not applicable	No public exploit	The Apache Traffic Server regex_remap plugin overflows the stack and integers from substitution input. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.
CVE-2026-58161	Critical	2026-07-29	Not applicable	No public exploit	Apache Traffic Server can crash from null dereferences and dangling references in TLS and SNI handling. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.
CVE-2026-58155	Critical	2026-07-29	Not applicable	No public exploit	Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy bypass. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.
CVE-2026-58154	Critical	2026-07-29	Not applicable	No public exploit	Apache Traffic Server can write out of bounds or overflow integers while parsing MIME and HTTP headers. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.
CVE-2024-50306	Critical	2024-11-14	Not applicable	No public exploit	Unchecked return value can allow Apache Traffic Server to retain privileges on startup. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.5, from 10.0.0 through 10.0.1. Users are recommended to upgrade to version 9.2.6 or 10.0.2, which fixes the issue.
CVE-2024-35161	Critical	2024-07-26	Not applicable	No public exploit	Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users can set a new setting (proxy.config.http.drop_chunked_trailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.
CVE-2023-33934	Critical	2023-08-09	Not applicable	No public exploit	Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1.
CVE-2021-43082	Critical	2021-11-03	Not applicable	No public exploit	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. This issue affects Apache Traffic Server 9.1.0.
CVE-2021-35474	Critical	2021-06-30	Not applicable	No public exploit	Stack-based Buffer Overflow vulnerability in cachekey plugin of Apache Traffic Server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.
CVE-2020-1944	Critical	2020-03-23	Not applicable	No public exploit	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. Upgrade to versions 7.1.9 and 8.0.6 or later versions.
CVE-2019-17565	Critical	2020-03-23	Not applicable	No public exploit	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. Upgrade to versions 7.1.9 and 8.0.6 or later versions.
CVE-2019-17559	Critical	2020-03-23	Not applicable	No public exploit	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. Upgrade to versions 7.1.9 and 8.0.6 or later versions.
CVE-2015-3249	Critical	2017-10-30	Not applicable	No public exploit	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 possibly execute arbitrary code via vectors related to the (1) frame_handlers array or (2) set_dynamic_table_size function.
CVE-2014-3624	Critical	2017-10-30	Not applicable	No public exploit	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.
CVE-2015-5206	Critical	2017-09-13	Not applicable	No public exploit	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 than CVE-2015-5168.
CVE-2015-5168	Critical	2017-09-13	Not applicable	No public exploit	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 CVE-2015-5206.

CVE

Severity

Published▾

Status

Exploitation

Description

CVE-2026-58179

Critical

2026-07-29

Not applicable

No public exploit

The Apache Traffic Server regex_remap plugin overflows the stack and integers from substitution input. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.

CVE-2026-58161

Critical

2026-07-29

Not applicable

No public exploit

Apache Traffic Server can crash from null dereferences and dangling references in TLS and SNI handling. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.

CVE-2026-58155

Critical

2026-07-29

Not applicable

No public exploit

Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy bypass. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.

CVE-2026-58154

Critical

2026-07-29

Not applicable

No public exploit

Apache Traffic Server can write out of bounds or overflow integers while parsing MIME and HTTP headers. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.

CVE-2024-50306

Critical

2024-11-14

Not applicable

No public exploit

Unchecked return value can allow Apache Traffic Server to retain privileges on startup. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.5, from 10.0.0 through 10.0.1. Users are recommended to upgrade to version 9.2.6 or 10.0.2, which fixes the issue.

CVE-2024-35161

Critical

2024-07-26

Not applicable

No public exploit

Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users can set a new setting (proxy.config.http.drop_chunked_trailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

CVE-2023-33934

Critical

2023-08-09

Not applicable

No public exploit

Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1.

CVE-2021-43082

Critical

2021-11-03

Not applicable

No public exploit

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. This issue affects Apache Traffic Server 9.1.0.

CVE-2021-35474

Critical

2021-06-30

Not applicable

No public exploit

Stack-based Buffer Overflow vulnerability in cachekey plugin of Apache Traffic Server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.

CVE-2020-1944

Critical

2020-03-23

Not applicable

No public exploit

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. Upgrade to versions 7.1.9 and 8.0.6 or later versions.

CVE-2019-17565

Critical

2020-03-23

Not applicable

No public exploit

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. Upgrade to versions 7.1.9 and 8.0.6 or later versions.

CVE-2019-17559

Critical

2020-03-23

Not applicable

No public exploit

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. Upgrade to versions 7.1.9 and 8.0.6 or later versions.

CVE-2015-3249

Critical

2017-10-30

Not applicable

No public exploit

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 possibly execute arbitrary code via vectors related to the (1) frame_handlers array or (2) set_dynamic_table_size function.

CVE-2014-3624

Critical

2017-10-30

Not applicable

No public exploit

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.

CVE-2015-5206

Critical

2017-09-13

Not applicable

No public exploit

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 than CVE-2015-5168.

CVE-2015-5168

Critical

2017-09-13

Not applicable

No public exploit

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 CVE-2015-5206.