{"id":"CVE-2025-54574","aliases":["ALSA-2023:7668","AZL-66075","CLSA-2025-1757010850","CLSA-2025-1757014622","CLSA-2025-1757015024","CLSA-2025-1757015131","CLSA-2025-1757016520","CLSA-2025-1757076484","CLSA-2025-1757076677","CLSA-2025-1757076749","DEBIAN-CVE-2025-54574","DLA-4312-1","DSA-5982-1","EUVD-2025-23392","GHSA-w4gv-vw3f-29g3","OESA-2026-1164","OESA-2026-1165","OESA-2026-1551","RHSA-2023:7465","RHSA-2023:7668","RHSA-2024:0072","RHSA-2024:0397","RHSA-2024:0771","RHSA-2024:0772","RHSA-2024:0773","RHSA-2024:1153","RHSA-2025:14414","UBUNTU-CVE-2025-54574"],"status":"published","title":"Squid's URN Handling can lead to Buffer Overflow","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. 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URN Handling can lead to Buffer Overflow","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:02:19.117Z","modified":"2025-11-05T17:04:21.087Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:32:27.603809Z"}],"euvd":[{"id":"EUVD-2025-23392","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:02:19Z","modified":"2025-11-05T17:04:21Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H","level":"critical"}],"updated_at":"2026-11-02T19:49:20.323605Z"}],"nvd":[{"id":"CVE-2025-54574","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:15:55.39Z","modified":"2026-06-17T09:40:20.177Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-122","CWE-787"],"updated_at":"2026-11-02T14:11:21.71471Z"}],"osv":[{"id":"CVE-2025-54574","title":"Squid's URN Handling can lead to Buffer Overflow","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:02:19.117Z","modified":"2026-11-06T10:57:01.675046196Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H","level":"critical"}],"cwes":["CWE-122"],"updated_at":"2026-11-06T11:08:47.346964Z"},{"id":"DEBIAN-CVE-2025-54574","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:15:55.39Z","modified":"2026-09-01T20:05:54.580853077Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:47.378563Z"},{"id":"OESA-2026-1164","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.(CVE-2025-54574)\n\nSquid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.(CVE-2025-62168)","status":"published","published":"2026-01-16T11:10:12Z","modified":"2026-08-18T01:19:28.950054947Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.339366Z"},{"id":"OESA-2026-1165","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.(CVE-2025-54574)\n\nSquid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.(CVE-2025-62168)","status":"published","published":"2026-01-16T11:10:12Z","modified":"2026-08-18T01:19:28.318141296Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.339366Z"},{"id":"OESA-2026-1551","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.(CVE-2025-54574)\n\nSquid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.(CVE-2025-62168)","status":"published","published":"2026-03-15T11:10:33Z","modified":"2026-08-18T01:19:36.654976253Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.721983Z"},{"id":"RHSA-2023:7465","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T15:58:46Z","modified":"2026-07-12T10:02:15Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2023:7668","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T15:58:54Z","modified":"2026-07-12T10:02:17Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0072","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T16:10:39Z","modified":"2026-07-12T10:02:22Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0397","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:10:57Z","modified":"2026-07-12T10:02:23Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0771","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:11:27Z","modified":"2026-07-12T10:02:24Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0772","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:11:18Z","modified":"2026-07-12T10:02:25Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0773","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:11:08Z","modified":"2026-07-12T10:02:25Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:1153","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T16:11:50Z","modified":"2026-07-12T10:02:31Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2025:14414","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2025-08-25T10:02:41Z","modified":"2026-07-12T10:03:39Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:15.599955Z"},{"id":"UBUNTU-CVE-2025-54574","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:15:00Z","modified":"2026-10-20T22:45:07.482184186Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:55:50.817402Z"},{"id":"ALSA-2023:7668","title":"Important: squid:4 security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: DoS against HTTP and HTTPS (CVE-2023-5824)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2023-12-06T00:00:00Z","modified":"2026-11-06T10:58:10.940372653Z","updated_at":"2026-11-06T11:08:40.431174Z"},{"id":"AZL-66075","title":"CVE-2025-54574 affecting package squid 5.7-5","description":"Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.","status":"published","published":"2025-08-01T18:15:55Z","modified":"2026-04-21T04:37:46.344047Z","updated_at":"2026-11-02T15:28:08.354547Z"},{"id":"CLSA-2025-1757010850","title":"squid: Fix of CVE-2025-54574","description":"- CVE-2025-54574: fix heap buffer overflow in URN parsing","status":"published","published":"2025-09-04T18:34:14Z","modified":"2026-06-01T00:33:27.638373225Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757014622","title":"squid34: Fix of CVE-2025-54574","description":"- CVE-2025-54574: fix buffer overflow in URN handling","status":"published","published":"2025-09-04T19:37:06Z","modified":"2026-06-01T00:33:25.999978831Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757015024","title":"squid: Fix of CVE-2025-54574","description":"- CVE-2025-54574: fix heap buffer overflow in URN parsing","status":"published","published":"2025-09-04T19:43:53Z","modified":"2026-06-01T00:33:26.401921589Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757015131","title":"squid: Fix of CVE-2025-54574","description":"- CVE-2025-54574: fix buffer overflow in URN handling","status":"published","published":"2025-09-04T19:45:35Z","modified":"2026-06-01T00:33:26.032777954Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757016520","title":"squid34: Fix of CVE-2025-54574","description":"- CVE-2025-54574: fix buffer overflow in URN handling","status":"published","published":"2025-09-04T20:08:44Z","modified":"2026-06-01T00:33:16.416346574Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757076484","title":"squid: Fix of CVE-2025-54574","description":"- CVE-2025-54574: fix buffer overflow in URN handling","status":"published","published":"2025-09-05T12:48:08Z","modified":"2026-06-01T00:33:16.444617374Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757076677","title":"Fix CVE(s): CVE-2025-54574","description":"   * SECURITY UPDATE: Disable URN protocol access to prevent potential\n     security vulnerabilities\n     - debian/patches/CVE-2025-54574.patch: Add ACL rules to deny URN\n       protocol access by default\n     - CVE-2025-54574","status":"published","published":"2025-09-05T12:51:21Z","modified":"2026-06-04T10:03:46.696453Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1757076749","title":"Fix CVE(s): CVE-2025-54574","description":"   * SECURITY UPDATE: Disable URN protocol access to prevent potential\n     security vulnerabilities\n     - debian/patches/CVE-2025-54574.patch: Add ACL rules to deny URN\n       protocol access by default\n     - CVE-2025-54574","status":"published","published":"2025-09-05T12:52:32Z","modified":"2026-06-04T10:03:37.659371Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"DLA-4312-1","title":"squid - security update","status":"published","published":"2025-09-27T00:00:00Z","modified":"2025-09-27T20:33:13.425919Z","updated_at":"2026-11-02T15:46:12.7027Z"},{"id":"DSA-5982-1","title":"squid - security update","status":"published","published":"2025-08-21T00:00:00Z","modified":"2026-03-09T02:09:14.168388Z","updated_at":"2026-11-02T15:46:18.296714Z"}]}}