111 results · Feed
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Critical 9.3
Apache Traffic Server: Header-name length truncation enables header aliasing and request smuggling
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 recom…
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High 8.9
Apache Traffic Server: Memory-safety errors in MIME and header parsing
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 upgrad…
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Medium 4.8
Apache Traffic Server: HTTP/2 multiplexed origin sessions are reused without certificate re-verification
Apache Traffic Server reuses multiplexed HTTP/2 origin connections without verifying the server certificate covers the new request hostname. This issue affects Apache Traffic Server: from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended…
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High 7.5
Apache Traffic Server: HTTP/2 and HTTP/3 dechunking removes per-stream buffer cap, allowing memory exhaustion
Apache Traffic Server drops the per-stream buffer cap when dechunking HTTP/2 or HTTP/3 responses, letting a slow client exhaust server memory. 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 …
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High 8.3
Apache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafely
Apache Traffic Server forwards HTTP/2 origin trailers to HTTP/1 clients without proper chunked framing when converting HTTP/2 to HTTP/1. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 o…
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Medium 5.9
Apache Traffic Server: Integer-handling errors in HPACK/XPACK decoding corrupt memory
Apache Traffic Server mishandles integers while decoding HPACK/XPACK headers, corrupting memory. 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 ve…
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High 7.5
Apache Traffic Server: Abusive HTTP/2 framing can exhaust resources and crash the server
Apache Traffic Server can be crashed or driven to resource exhaustion by abusive HTTP/2 framing and flow-control. 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…
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Critical 10.0
Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling. 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…
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Critical 10.0
Apache Traffic Server: Malformed chunked message body allows request smuggling
Apache Traffic Server allows request smuggling if chunked messages are malformed. 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…
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Medium 5.9
Apache Traffic Server: Buffer overflow via Host field that has a long string value
Apache Traffic Server copies the client Host header into a fixed-size stack buffer without a bound during redirect handling, so an over-long Host header overflows the stack when redirect following is enabled. This issue affects Apache Traffic Server: from 8.0…
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High 7.2
Apache Traffic Server: Request smuggling via chunked extension quoted-string parsing
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3, from 9.0.0 through 9.2.14. Users are recommended to upgrade to versi…
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Critical 10.0CVE-2026-33267 Public exploit
Apache Traffic Server: Untrusted @ headers can spoof ATS internal metadata
Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.14, from 10.1.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.
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High 8.2
Apache Traffic Server: Regex mappings match with malicious domain names
Regular Expression without Anchors vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.X through 10.1.3, from 9.0.X through 9.2.14. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.
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Critical 9.3
Apache Traffic Server: SNI to Host header matching policy is not properly enforced
Improper Access Control vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.1.15 or 10.1.4, which fixes the issue.
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High 7.5
Apache Traffic Server: DoS vulnerability in HTTP/2 via stalled flow-control conditions
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 are recommended to upgrade to version 9.1.14 or 10.1.3, which fixes the issue.
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High 7.5
Apache Traffic Server: Malformed chunked message body allows request smuggling
Apache Traffic Server allows request smuggling if chunked messages are malformed. This issue affects Apache Traffic Server: from 9.0.0 through 9.2.12, from 10.0.0 through 10.1.1. Users are recommended to upgrade to version 9.2.13 or 10.1.2, which fix the iss…
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High 7.5
Apache Traffic Server: A simple legitimate POST request causes a crash
A bug in POST request handling causes a crash under a certain condition. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.1, from 9.0.0 through 9.2.12. Users are recommended to upgrade to version 10.1.2 or 9.2.13, which fix the issue. A work…
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High 7.5
Apache Traffic Server: Client IP address from PROXY protocol is not used for ACL
ACL configured in ip_allow.config or remap.config does not use IP addresses that are provided by PROXY protocol. Users can use a new setting (proxy.config.acl.subjects) to choose which IP addresses to use for the ACL if Apache Traffic Server is configured to …
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High 7.5
Apache Traffic Server: Remote DoS via memory exhaustion in ESI Plugin
ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted. Users can use a new setting for the plugin (--max-inclusion-depth) to limit it. This issue affects Apache Traf…
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High 7.5
Apache Traffic Server: Malformed chunked message body allows request smuggling
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 10.0.4. Users are recommended to upgrade to version 9.2.10 or 10.0.5, which fixes the is…
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Medium 6.3
Apache Traffic Server: Request smuggling via pipelining after a chunked message body
Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3. Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fix…
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Medium 6.3
Apache Traffic Server: Intercept plugins are not access controlled
Improper Access Control vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.8, from 10.0.0 through 10.0.3. Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.
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Medium 6.3
Apache Traffic Server: ACL is not fully compatible with older versions
Improper Access Control vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.0 through 10.0.3. Users are recommended to upgrade to version 10.0.4, which fixes the issue.
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Medium 4.3
Apache Traffic Server: Expect header field can unreasonably retain resource
Expected Behavior Violation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3. Users are recommended to upgrade to versions 9.2.9 or 10.0.4 or newer, which fixes the issue.
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Critical 9.1
Apache Traffic Server: Server process can fail to drop privilege
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 th…
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High 7.5
Apache Traffic Server: Valid Host field value can cause crashes
Valid Host header field can cause Apache Traffic Server to crash on some platforms. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.5. Users are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does not have th…
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High 7.5
Apache Traffic Server: Cache key plugin is vulnerable to cache poisoning attack
Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.5. Users are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does no…
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High 7.5
Apache Traffic Server: Incomplete field name check allows request smuggling
Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue…
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High 8.2
Apache Traffic Server: Invalid Accept-Encoding can force forwarding requests
Invalid Accept-Encoding header can cause Apache Traffic Server to fail cache lookup and force forwarding requests. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users are recommended to upgrade to version 8.1.1…
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Critical 9.1
Apache Traffic Server: Incomplete check for chunked trailer section allows request smuggling
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 th…
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High 7.5CVE-2024-31309 EPSS 92%
Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack
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. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minut…
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High 7.5CVE-2023-39456 EPSS 58%
Apache Traffic Server: Malformed http/2 frames can cause an abort
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 recommended to upgrade to version 9.2.3, which fixes the issue.
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High 7.5
Apache Traffic Server: s3_auth plugin problem with hash calculation
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 through 9.2.2. Users are recommended to upgrade to version 8.1.9 or 9.2.3, which f…
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Critical 9.1
Apache Traffic Server: Differential fuzzing for HTTP request parsing discrepancies
Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1.
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High 7.5
Apache Traffic Server: Invalid Range header causes a crash
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.
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Unscored —
Apache Traffic Server: Configuration option to block the PUSH method in ATS didn't work
Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server. The configuration option proxy.config.http.push_method_enabled didn't function. However, by default the PUSH method is blocked in the ip_allow configuration file.Th…
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High 7.5
Apache Traffic Server: s3_auth plugin problem with hash calculation
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 through 9.2.0. 8.x users should upgrade to 8.1.7 or later versions 9.x users shou…
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High 7.5
Apache Traffic Server: The TRACE method can be use to disclose network information
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 9.2.0.
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Medium 6.1
Apache Traffic Server: Security issues with the xdebug plugin
Improper Input Validation vulnerability for the xdebug plugin in Apache Software Foundation Apache Traffic Server can lead to cross site scripting and cache poisoning attacks.This issue affects Apache Traffic Server: 9.0.0 to 9.1.3. Users should upgrade to 9.…
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Medium 5.3
Apache Traffic Server: Improperly reading the client requests
Improper Check for Unusual or Exceptional Conditions vulnerability in handling the requests to Apache Traffic Server. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.