CVE-2020-25097
Detail
Modified After Enrichment
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
References to Advisories, Solutions, and Tools
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Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-20
Improper Input Validation
NIST
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
NIST
Change History
14 change records found show changes
CVE Modified by MITRE
6/16/2026 11:06:22 PM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]
CVE Modified by CVE
11/21/2024 12:17:19 AM
Action
Type
Old Value
New Value
Added
Reference
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch
Added
Reference
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch
Added
Reference
https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/
Added
Reference
https://security.gentoo.org/glsa/202105-14
Added
Reference
https://security.netapp.com/advisory/ntap-20210727-0010/
Added
Reference
https://www.debian.org/security/2021/dsa-4873
CVE Modified by MITRE
5/14/2024 2:49:59 AM
Action
Type
Old Value
New Value
CVE Modified by MITRE
11/06/2023 10:20:12 PM
Action
Type
Old Value
New Value
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/ [No types assigned]
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/ [No types assigned]
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/ [No types assigned]
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/
Modified Analysis by NIST
4/05/2022 2:04:29 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:a:netapp:cloud_manager:-:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/ Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/ Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/ Mailing List, Third Party Advisory
Changed
Reference Type
https://security.gentoo.org/glsa/202105-14 No Types Assigned
https://security.gentoo.org/glsa/202105-14 Third Party Advisory
Changed
Reference Type
https://security.netapp.com/advisory/ntap-20210727-0010/ No Types Assigned
https://security.netapp.com/advisory/ntap-20210727-0010/ Third Party Advisory
CVE Modified by MITRE
7/30/2021 10:15:13 AM
Action
Type
Old Value
New Value
Added
Reference
https://security.netapp.com/advisory/ntap-20210727-0010/ [No Types Assigned]
CVE Modified by MITRE
5/26/2021 7:15:08 AM
Action
Type
Old Value
New Value
Added
Reference
https://security.gentoo.org/glsa/202105-14 [No Types Assigned]
CVE Modified by MITRE
4/09/2021 3:15:13 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/O3RYBDMJCPYGOSURWDR3WJTE474UFT77/ [No Types Assigned]
CVE Modified by MITRE
4/09/2021 1:15:16 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/FBXFWKIGXPERDVQXG556LLPUOCMQGERC/ [No Types Assigned]
CVE Modified by MITRE
4/05/2021 10:15:12 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/DJMDRVV677AJL4BZAOLCT5LMFCGBZTC2/ [No Types Assigned]
Reanalysis by NIST
4/01/2021 3:23:53 PM
Action
Type
Old Value
New Value
Added
CWE
NIST CWE-444
Reanalysis by NIST
3/29/2021 2:15:33 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Removed
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Initial Analysis by NIST
3/24/2021 10:48:42 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Added
CVSS V2
NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Added
CWE
NIST CWE-20
Added
CPE Configuration
OR
*cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (excluding) 4.14
*cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 5.0.1 up to (excluding) 5.0.5
Added
CPE Configuration
OR
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Changed
Reference Type
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch No Types Assigned
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_11.patch Mailing List, Patch, Vendor Advisory
Changed
Reference Type
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch No Types Assigned
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2020_11.patch Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6 No Types Assigned
https://github.com/squid-cache/squid/security/advisories/GHSA-jvf6-h9gj-pmj6 Patch, Third Party Advisory
Changed
Reference Type
https://www.debian.org/security/2021/dsa-4873 No Types Assigned
https://www.debian.org/security/2021/dsa-4873 Third Party Advisory
CVE Modified by MITRE
3/24/2021 8:15:12 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.debian.org/security/2021/dsa-4873 [No Types Assigned]
Quick Info
CVE Dictionary Entry: CVE-2020-25097 NVD
Published Date: 03/19/2021 NVD
Last Modified: 06/16/2026
Source: MITRE