CVE-2026-108082

Что произошло

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to versions 5.4.54, 6.4.46, 7.4.19, and 8.1.7, HeaderUtils::split() parsed header values with a pattern whose token alternative also matched whitespace, followed by a (?<!\s) lookbehind. A run of whitespace placed before a separator could be divided among the iterations of the enclosing repetition in exponentially many ways, and the engine tried all of them before settling. HeaderBag calls it for the Cache-Control header whenever a Request is built, so any application handling HTTP requests is reachable, with no authentication. A single request carrying such a header costs close to a second of CPU (813 ms for a run of 17 spaces in an 8 KB header on PHP 8.5, doubling with each extra space). From 18 spaces on, preg_match_all() gives up at pcre.backtrack_limit and split() returns an empty array, so every directive of the header is silently dropped. This issue affects symfony/http-foundation v4.1.0-BETA1 through v5.4.53, v6.0.0-BETA1 through v6.4.45, v7.0.0-BETA1 through v7.4.18, and v8.0.0-BETA1 through v8.1.6.

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "v4.1.0-BETA1",
  "lessThan": "v5.4.54",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "v6.0.0-BETA1",
  "lessThan": "v6.4.46",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "v7.0.0-BETA1",
  "lessThan": "v7.4.19",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "v8.0.0-BETA1",
  "lessThan": "v8.1.7",
  "versionType": "git"
}

CVSS: оценки и векторы

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Источники и ссылки

{
  "cwes": [
    "cve",
    "ghsa"
  ],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-03T21:11:41.011672+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T21:26:23.844525+00:00"
  },
  "scores": [
    "cve"
  ],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T21:26:23.844525+00:00"
  },
  "affected": [
    "cve",
    "ghsa"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T21:26:23.844525+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-03T21:11:41.011672+00:00"
  },
  "references": [
    "cve",
    "ghsa"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T21:26:23.844525+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены04.11.2026, 00:11
2. Данные обновлены03.11.2026, 00:11
3. Данные обновлены02.11.2026, 00:09
4. Данные обновлены31.10.2026, 11:56
5. Данные обновлены30.10.2026, 16:15
6. Данные обновлены29.10.2026, 00:26
7. Данные обновлены28.10.2026, 18:05
8. Появились сведения об исправлении28.10.2026, 17:59

Личная заметка и статус

Другие CVE того же продукта