Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-8wgj-6wx8-h5hq

Symfony HTTP Foundation web cache poisoning

CVSS 6.5 MediumEPSS 0.58 · 99th percentile

Published by the GitHub Advisory Database at 13 May 2022, 01:05 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
symfony/http-foundationPackagist>=2.7.0, <2.7.49 || >=2.8.0, <2.8.44 || >=3.0.0, <3.3.18 || >=3.4.0, <3.4.14 || >=4.0.0, <4.0.14 || >=4.1.0, <4.1.32.7.49, 2.8.44, 3.3.18, 3.4.14, 4.0.14, 4.1.3
symfony/symfonyPackagist>=2.7.0, <2.7.49 || >=2.8.0, <2.8.44 || >=3.0.0, <3.3.18 || >=3.4.0, <3.4.14 || >=4.0.0, <4.0.14 || >=4.1.0, <4.1.32.7.49, 2.8.44, 3.3.18, 3.4.14, 4.0.14, 4.1.3
Identifiers
GHSA-8wgj-6wx8-h5hq · CVE-2018-14773 · PKSA-nqj4-v43p-2gxc · PKSA-vh39-74ft-ywr6
Weakness (CWE)
CWE-349
Tags
Published
13 May 2022
Updated
16 Feb 2024

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Symfony HTTP Foundation (symfony/http-foundation and symfony/symfony) is vulnerable in versions 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2. Any client that can send requests to an affected application can use the X-Original-URL or X-Rewrite-URL headers to override the request path, enabling web cache poisoning. Upgrade to 2.7.49, 2.8.44, 3.3.18, 3.4.14, 4.0.14, or 4.1.3 as appropriate for your branch.

Written 4 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.58, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:32 UTC First seen by agentprime
  2. 31 Oct 2026, 14:32 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.