Vulnerabilities (CVE)

Filtered by vendor Squid-cache Subscribe
Filtered by product Squid
Total 109 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2015-5400 3 Debian, Fedoraproject, Squid-cache 3 Debian Linux, Fedora, Squid 2025-04-12 6.8 MEDIUM N/A
Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request.
CVE-2014-9749 2 Opensuse, Squid-cache 2 Opensuse, Squid 2025-04-12 4.0 MEDIUM N/A
Squid 3.4.4 through 3.4.11 and 3.5.0.1 through 3.5.1, when Digest authentication is used, allow remote authenticated users to retain access by leveraging a stale nonce, aka "Nonce replay vulnerability."
CVE-2016-4554 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2025-04-12 5.0 MEDIUM 8.6 HIGH
mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a crafted HTTP Host header, aka a "header smuggling" issue.
CVE-2016-4051 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2025-04-12 6.8 MEDIUM 8.8 HIGH
Buffer overflow in cachemgr.cgi in Squid 2.x, 3.x before 3.5.17, and 4.x before 4.0.9 might allow remote attackers to cause a denial of service or execute arbitrary code by seeding manager reports with crafted data.
CVE-2015-3455 3 Fedoraproject, Oracle, Squid-cache 4 Fedora, Linux, Solaris and 1 more 2025-04-12 2.6 LOW N/A
Squid 3.2.x before 3.2.14, 3.3.x before 3.3.14, 3.4.x before 3.4.13, and 3.5.x before 3.5.4, when configured with client-first SSL-bump, do not properly validate the domain or hostname fields of X.509 certificates, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate.
CVE-2014-7142 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Solaris, Squid 2025-04-12 6.4 MEDIUM N/A
The pinger in Squid 3.x before 3.4.8 allows remote attackers to obtain sensitive information or cause a denial of service (crash) via a crafted (1) ICMP or (2) ICMP6 packet size.
CVE-2014-0128 2 Opensuse, Squid-cache 2 Opensuse, Squid 2025-04-12 5.0 MEDIUM N/A
Squid 3.1 before 3.3.12 and 3.4 before 3.4.4, when SSL-Bump is enabled, allows remote attackers to cause a denial of service (assertion failure) via a crafted range request, related to state management.
CVE-2016-4053 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2025-04-12 4.3 MEDIUM 3.7 LOW
Squid 3.x before 3.5.17 and 4.x before 4.0.9 allow remote attackers to obtain sensitive stack layout information via crafted Edge Side Includes (ESI) responses, related to incorrect use of assert and compiler optimization.
CVE-2016-4556 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2025-04-12 5.0 MEDIUM 7.5 HIGH
Double free vulnerability in Esi.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via a crafted Edge Side Includes (ESI) response.
CVE-2016-2572 1 Squid-cache 1 Squid 2025-04-12 5.0 MEDIUM 7.5 HIGH
http.cc in Squid 4.x before 4.0.7 relies on the HTTP status code after a response-parsing failure, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a malformed response.
CVE-2016-2569 1 Squid-cache 1 Squid 2025-04-12 5.0 MEDIUM 7.5 HIGH
Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not properly append data to String objects, which allows remote servers to cause a denial of service (assertion failure and daemon exit) via a long string, as demonstrated by a crafted HTTP Vary header.
CVE-2016-3948 1 Squid-cache 1 Squid 2025-04-12 5.0 MEDIUM 7.5 HIGH
Squid 3.x before 3.5.16 and 4.x before 4.0.8 improperly perform bounds checking, which allows remote attackers to cause a denial of service via a crafted HTTP response, related to Vary headers.
CVE-2014-3609 1 Squid-cache 1 Squid 2025-04-12 5.0 MEDIUM N/A
HttpHdrRange.cc in Squid 3.x before 3.3.12 and 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via a request with crafted "Range headers with unidentifiable byte-range values."
CVE-2016-4553 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2025-04-12 5.0 MEDIUM 8.6 HIGH
client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.
CVE-2013-1839 1 Squid-cache 1 Squid 2025-04-11 7.8 HIGH N/A
The strHdrAcptLangGetItem function in errorpage.cc in Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a "," character in an Accept-Language header.
CVE-2013-4123 2 Opensuse, Squid-cache 2 Opensuse, Squid 2025-04-11 5.0 MEDIUM N/A
client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.
CVE-2013-4115 2 Opensuse, Squid-cache 2 Opensuse, Squid 2025-04-11 7.5 HIGH N/A
Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3.3 through 3.3.6 allows remote attackers to cause a denial of service (memory corruption and server termination) via a long name in a DNS lookup request.
CVE-2023-46724 1 Squid-cache 1 Squid 2025-02-13 N/A 8.6 HIGH
Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.
CVE-2023-46846 2 Redhat, Squid-cache 8 Enterprise Linux, Enterprise Linux Eus, Enterprise Linux For Arm 64 and 5 more 2024-12-18 N/A 9.3 CRITICAL
SQUID is vulnerable to HTTP request smuggling, caused by chunked decoder lenience, allows a remote attacker to perform Request/Response smuggling past firewall and frontend security systems.
CVE-2024-23638 1 Squid-cache 1 Squid 2024-11-21 N/A 6.5 MEDIUM
Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`.