Vulnerability Database

328,409

Total vulnerabilities in the database

Vulnerabilities for products matching "squid"

Found 2 matching products. Filters apply to all results.

You can search for specific versions with /product/squid/1.2.3

squid / squid

37 vulnerabilities found
Title Severity Exploit Date Affected Version
Medium February 8, 2009 2/8/09
== 3.0.stable8
== 3.0.stable9
== 3.1.0.2
== 2.7.stable3
== 3.0.stable3
== 3.1
== 3.0.stable1
== 3.0.stable10
== 3.0.stable12
== 2.7.stable4
== 3.0.stable7
== 2.7.stable5
== 3.0.stable6
== 2.7.stable2
== 3.1.0.1
== 3.0.stable2
== 3.0.stable4
== 3.0.stable11
== 2.7.stable1
== 3.0.stable5
== 3.1.0.3
== 3.1.0.4
Low April 1, 2008 4/1/08
== 2.6.stable17
Medium March 21, 2007 3/21/07
== 2.6.stable5
== 2.6.stable6
== 2.6.stable2
== 2.6.stable10
== 2.6.stable7
== 2.6.stable9
== 2.6.stable8
== 2.6.stable4
== 2.6.stable11
== 2.6.stable3
== 2.6.stable1
Medium January 16, 2007 1/16/07
== 2.6.stable5
== 2.6.stable6
== 2.6.stable2
== 2.6.stable4
== 2.6.stable3
== 2.6.stable1
Medium January 16, 2007 1/16/07
== 2.6.stable6
Medium October 27, 2005 10/27/05
== 2.6.stable1
Medium October 20, 2005 10/20/05
== 2.3.stable3
== 2.5.stable11
== 2.2.stable2
== 2.2.stable3
== 2.0.patch2
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.5.stable10
== 2.1.patch1
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.1.release
== 2.5.6
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.5.stable9
== 2.4.stable7
== 2.2.devel4
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.5.stable8
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.2.devel3
== 2.4.stable3
== 2.4
== 2.3.stable5
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
== 2.5.stable7
Medium September 30, 2005 9/30/05
<= 2.5.stable10
== 2.5.9
Medium September 7, 2005 9/7/05
== 2.3.stable3
== 2.2.stable2
== 2.2.stable3
== 2.0.patch2
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.5.stable10
== 2.1.patch1
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.1.release
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.5.stable9
== 2.4.stable7
== 2.2.devel4
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.5.stable8
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.2.devel3
== 2.4.stable3
== 2.3.stable5
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
== 2.5.stable7
Medium September 7, 2005 9/7/05
== 2.5_stable9
== 2.3.stable3
== 2.2.stable2
== 2.5_.stable3
== 2.1_patch2
== 2.2.stable3
== 2.0.patch2
== 2.4_.stable7
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.0_patch2
== 2.5_stable3
== 2.5.stable10
== 2.1.patch1
== 2.4_.stable2
== 2.3_.stable4
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.3_.stable5
== 2.1.release
== 2.5.6
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.5.stable9
== 2.4.stable7
== 2.5_.stable5
== 2.2.devel4
== 2.4_stable7
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.5_.stable6
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.5.stable8
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.4_.stable6
== 2.2.devel3
== 2.5_.stable1
== 2.4.stable3
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.3.stable5
== 2.5_stable4
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
== 2.5.stable7
High May 24, 2005 5/24/05
== 2.6.stable1
Medium May 11, 2005 5/11/05
<= 2.5_stable9
High May 2, 2005 5/2/05
== 2.3.stable3
== 2.2.stable2
== 2.2.stable3
== 2.0.patch2
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.1.patch1
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.1.release
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.4.stable7
== 2.2.devel4
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.2.devel3
== 2.4.stable3
== 2.3.stable5
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
High May 2, 2005 5/2/05
== 2.3.stable3
== 2.2.stable2
== 2.2.stable3
== 2.0.patch2
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.1.patch1
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.1.release
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.4.stable7
== 2.2.devel4
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.2.devel3
== 2.4.stable3
== 2.3.stable5
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
Medium May 2, 2005 5/2/05
== 2.5.stable5
== 2.5.stable3
== 2.5.stable1
== 2.5.stable6
== 2.5.stable4
== 2.5.stable2
== 2.5.stable7
Medium May 2, 2005 5/2/05
== 2.5_stable9
== 2.3.stable3
== 2.2.stable2
== 2.5_.stable3
== 2.1_patch2
== 2.2.stable3
== 2.0.patch2
== 2.4_.stable7
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.0_patch2
== 2.5_stable3
== 2.1.patch1
== 2.4_.stable2
== 2.3_.stable4
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.3_.stable5
== 2.1.release
== 2.5.6
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.4.stable7
== 2.5_.stable5
== 2.2.devel4
== 2.4_stable7
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.5_.stable6
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.5.stable8
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.4_.stable6
== 2.2.devel3
== 2.5_.stable1
== 2.4.stable3
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.3.stable5
== 2.5_stable4
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
== 2.5.stable7
High May 2, 2005 5/2/05
== 2.5.stable5
== 2.5.stable3
== 2.5.stable1
== 2.5.stable9
== 2.5.stable6
== 2.5.stable4
== 2.5.stable2
== 2.5.stable8
== 2.5.stable7
Medium April 14, 2005 4/14/05
== 2.5_stable9
== 2.3.stable3
== 2.2.stable2
== 2.5_.stable3
== 2.1_patch2
== 2.2.stable3
== 2.0.patch2
== 2.4_.stable7
== 2.1.patch2
== 2.5.stable5
== 2.2.stable4
== 2.0.patch1
== 2.0_patch2
== 2.5_stable3
== 2.1.patch1
== 2.4_.stable2
== 2.3_.stable4
== 2.3.devel3
== 2.5.stable3
== 2.4.stable4
== 2.3_.stable5
== 2.1.release
== 2.5.6
== 2.5.stable1
== 2.0.release
== 2.1.pre4
== 2.1.pre3
== 2.3.stable1
== 2.4.stable7
== 2.5_.stable5
== 2.2.devel4
== 2.4_stable7
== 2.5.stable6
== 2.3.stable2
== 2.4.stable1
== 2.5_.stable6
== 2.2.stable1
== 2.5.stable4
== 2.5.stable2
== 2.3.stable4
== 2.1.pre1
== 2.4.stable2
== 2.2.pre1
== 2.4_.stable6
== 2.2.devel3
== 2.5_.stable1
== 2.4.stable3
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.3.stable5
== 2.5_stable4
== 2.2.stable5
== 2.2.pre2
== 2.0.pre1
== 2.4.stable6
== 2.3.devel2
== 2.5.stable7
Low March 8, 2005 3/8/05
== 2.5.stable5
== 2.5.stable6
== 2.5.stable7
Medium February 7, 2005 2/7/05
== 2.5_stable9
== 2.5_.stable3
== 2.5.stable5
== 2.5_stable3
== 2.5.stable3
== 2.5.6
== 2.5.stable1
== 2.5_.stable5
== 2.5.stable6
== 2.5_.stable6
== 2.5.stable4
== 2.5.stable2
== 2.5_.stable1
== 2.5_.stable4
== 2.5_stable4
== 2.5.stable7
Medium February 7, 2005 2/7/05
== 2.5_stable9
== 2.5_.stable3
== 2.5.stable5
== 2.5_stable3
== 2.5.stable3
== 2.5.6
== 2.5.stable1
== 2.5_.stable5
== 2.5.stable6
== 2.5_.stable6
== 2.5.stable4
== 2.5.stable2
== 2.5_.stable1
== 2.5_.stable4
== 2.5_stable4
== 2.5.stable7
Medium January 27, 2005 1/27/05
== 2.0_patch2
== 2.1_patch2
== 2.3_.stable4
== 2.3_.stable5
== 2.4
== 2.4_.stable2
== 2.4_.stable6
== 2.4_.stable7
== 2.5_.stable1
== 2.5_.stable3
== 2.5_.stable4
== 2.5_.stable5
== 2.5_.stable6
== 3.0_pre1
== 3.0_pre2
== 3.0_pre3
Medium January 25, 2005 1/25/05
== 2.5_stable9
== 2.5_.stable3
== 2.1_patch2
== 2.4_.stable7
== 2.5.stable5
== 2.0_patch2
== 2.5_stable3
== 2.4_.stable2
== 2.3_.stable4
== 2.5.stable3
== 2.3_.stable5
== 2.5.6
== 2.5.stable1
== 2.5_.stable5
== 2.4_stable7
== 2.5.stable6
== 2.5_.stable6
== 2.5.stable4
== 2.5.stable2
== 2.4_.stable6
== 2.5_.stable1
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.5_stable4
== 2.6.stable1
== 2.5.stable7
Medium January 15, 2005 1/15/05
== 2.5_stable9
== 2.5_.stable3
== 2.1_patch2
== 2.4_.stable7
== 2.5.stable5
== 2.0_patch2
== 2.5_stable3
== 2.4_.stable2
== 2.3_.stable4
== 2.5.stable3
== 2.3_.stable5
== 2.5.6
== 2.5.stable1
== 2.5_.stable5
== 2.4_stable7
== 2.5.stable6
== 2.5_.stable6
== 2.5.stable4
== 2.5.stable2
== 2.4_.stable6
== 2.5_.stable1
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.5_stable4
== 2.6.stable1
== 2.5.stable7
Medium January 15, 2005 1/15/05
== 2.5_stable9
== 2.5_.stable3
== 2.1_patch2
== 2.4_.stable7
== 2.5.stable5
== 2.0_patch2
== 2.5_stable3
== 2.4_.stable2
== 2.3_.stable4
== 2.5.stable3
== 2.3_.stable5
== 2.5.6
== 2.5.stable1
== 2.5_.stable5
== 2.4_stable7
== 2.5.stable6
== 2.5_.stable6
== 2.5.stable4
== 2.5.stable2
== 2.4_.stable6
== 2.5_.stable1
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.5_stable4
== 2.6.stable1
== 2.5.stable7
Medium January 11, 2005 1/11/05
== 2.5_stable9
== 2.5_.stable3
== 2.1_patch2
== 2.4_.stable7
== 2.5.stable5
== 2.0_patch2
== 2.5_stable3
== 2.4_.stable2
== 2.3_.stable4
== 2.5.stable3
== 2.3_.stable5
== 2.5.6
== 2.5.stable1
== 2.5_.stable5
== 2.4_stable7
== 2.5.stable6
== 2.5_.stable6
== 2.5.stable4
== 2.5.stable2
== 2.4_.stable6
== 2.5_.stable1
== 2.3_stable5
== 2.4
== 2.5_.stable4
== 2.5_stable4
== 2.6.stable1
== 2.5.stable7
Medium December 31, 2004 12/31/04
== 2.5_stable5
Medium November 3, 2004 11/3/04
<= 2.5.6
High March 15, 2004 3/15/04
== 2.1_patch2
== 2.0_patch2
== 2.5_stable3
== 2.4_stable7
== 2.3_stable5
== 2.4
== 2.5_stable4
Low December 31, 2002 12/31/02
== 2.4
High July 26, 2002 7/26/02
<= 2.4.stable6
High July 26, 2002 7/26/02
<= 2.4.stable6
Medium July 26, 2002 7/26/02
<= 2.4.stable6
High March 26, 2002 3/26/02
<= 2.4_9
High March 8, 2002 3/8/02
<= 2.4_stable_2
High March 8, 2002 3/8/02
<= 2.4_stable_3
Low March 8, 2002 3/8/02
<= 2.4_stable_2

squid-cache / squid

106 vulnerabilities found
Title Severity Exploit Date Affected Version
Critical October 17, 2025 10/17/25
< 7.2
Low September 26, 2025 9/26/25
<= 7.1
Critical August 1, 2025 8/1/25
< 6.4
High October 28, 2024 10/28/24
>= 3.0 < 6.10
Medium June 25, 2024 6/25/24
>= 3.0 < 6.10
High March 6, 2024 3/6/24
>= 3.5.27 < 6.8
Medium February 14, 2024 2/14/24
>= 3.0 < 6.5
Medium January 24, 2024 1/24/24
>= 5.0 <= 5.9
>= 6.0 < 6.6
High December 14, 2023 12/14/23
== 2.6
== 2.7-stable3
== 2.7-stable4
== 2.7-stable2
== 2.7-stable5
== 2.7-stable6
== 2.7-stable7
== 2.7-stable8
== 2.7-stable9
== 2.7
== 2.7-stable1
>= 3.1 <= 5.9
>= 6.0.1 <= 6.5
High December 4, 2023 12/4/23
>= 3.5 <= 5.9
High December 4, 2023 12/4/23
<= 6.4
High December 4, 2023 12/4/23
<= 6.4
High November 6, 2023 11/6/23
< 6.0.1
High November 3, 2023 11/3/23
< 6.4
High November 3, 2023 11/3/23
>= 5.0.3 < 6.4
High November 3, 2023 11/3/23
>= 3.2.0.1 < 6.4
Critical November 3, 2023 11/3/23
>= 2.6 < 6.4
High November 1, 2023 11/1/23
>= 3.3.0.1 < 6.4
Medium December 25, 2022 12/25/22
>= 4.9 <= 4.17
>= 5.0.6 < 5.7
High December 25, 2022 12/25/22
>= 2.5 < 5.7
Medium July 17, 2022 7/17/22
>= 3.0 <= 3.5.28
>= 4.0 <= 4.17
>= 5.0 < 5.6
High October 18, 2021 10/18/21
>= 5.0.6 < 5.2
Medium June 8, 2021 6/8/21
== 2.5.stable6
== 2.6
== 2.5.stable9
== 2.7-stable3
== 2.5.stable4
== 2.5.stable7
== 2.5.stable14
== 2.7-stable4
== 2.5.stable2
== 2.5.stable5
== 2.5.stable12
== 2.5.stable13
== 2.5.stable11
== 2.5.stable3
== 2.5.stable8
== 2.5.stable10
== 2.7-stable2
== 2.7-stable5
== 2.7-stable6
== 2.7-stable7
== 2.7-stable8
== 2.7-stable9
>= 5.0 < 5.0.6
>= 3.0 < 4.15
== 2.7
Medium May 28, 2021 5/28/21
< 4.15
>= 5.0 < 5.0.6
Medium May 27, 2021 5/27/21
< 4.15
>= 5.0 < 5.0.6
Medium May 27, 2021 5/27/21
< 4.15
>= 5.0 < 5.0.6
High May 27, 2021 5/27/21
>= 2.0 < 4.15
>= 5.0 < 5.0.6
Low May 27, 2021 5/27/21
>= 1.0 < 4.15
>= 5.0 < 5.0.6
Medium May 27, 2021 5/27/21
>= 4.0.1 < 4.15
>= 5.0 < 5.0.6
High March 19, 2021 3/19/21
>= 2.0 < 4.14
>= 5.0.1 < 5.0.5
Low March 9, 2021 3/9/21
<= 4.14
>= 5.0 <= 5.0.5
Medium September 2, 2020 9/2/20
< 4.13
>= 5.0 < 5.0.4
Medium September 2, 2020 9/2/20
< 4.13
>= 5.0 < 5.0.4
High August 24, 2020 8/24/20
>= 3.0 < 4.13
>= 5.0.1 < 5.0.4
High June 30, 2020 6/30/20
>= 3.1 <= 3.5.28
>= 4.0 < 4.12
>= 5.0 < 5.0.3
Medium June 30, 2020 6/30/20
>= 5.0 < 5.0.3
Critical June 30, 2020 6/30/20
== 2.7-stable3
== 2.7-stable4
== 2.7
== 2.7-stable2
== 2.7-stable5
== 2.7-stable6
== 2.7-stable7
== 2.7-stable8
== 2.7-stable9
>= 4.0 < 4.12
>= 3.1 <= 3.5.28
>= 2.0 <= 2.6
>= 5.0 < 5.0.3
Critical April 23, 2020 4/23/20
>= 3.0 <= 3.5.28
>= 4.0 < 4.11
>= 5.0 < 5.0.2
Critical April 15, 2020 4/15/20
>= 3.0 <= 3.5.28
>= 4.0 <= 4.10
>= 5.0 <= 5.0.1
High April 15, 2020 4/15/20
<= 4.7
Medium April 15, 2020 4/15/20
>= 3.0 <= 3.5.28
>= 4.0 <= 4.7
>= 5.0 <= 5.0.1
Low April 15, 2020 4/15/20
<= 4.7
Critical April 15, 2020 4/15/20
<= 4.7
Medium March 20, 2020 3/20/20
< 4.9
High February 4, 2020 2/4/20
< 4.10
High February 4, 2020 2/4/20
< 4.10
High February 4, 2020 2/4/20
< 4.10
High February 4, 2020 2/4/20
< 4.10
High November 26, 2019 11/26/19
== 2.7-stable3
== 2.7-stable4
>= 2.0 <= 2.7
>= 3.0 <= 3.5.28
>= 4.0 <= 4.8
== 2.7-stable2
== 2.7-stable5
== 2.7-stable6
== 2.7-stable7
== 2.7-stable8
== 2.7-stable9
High November 26, 2019 11/26/19
>= 3.0 <= 3.5.28
>= 4.0 <= 4.8

Showing vulnerabilities for 2 products matching "squid". Each product has independent pagination.

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.