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Advisory record · GHSA-7rpj-w9pf-39rr

Unbounded Nesting in the Expression Parser Lets Untrusted Expressions Crash the Process

CVSS 8.7 HighEPSS 0.0038 · 32nd percentile

Published by the maintainers · not yet reviewed by GitHub. The symfony/symfony maintainers published this as a GitHub repository advisory; GitHub’s reviewed advisory replaces it here when it arrives.

Published by the symfony/symfony maintainers at 15 Oct 2026, 06:58 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
symfony/expression-languagePackagist<5.4.54 || >=6, <6.4.48 || >=7, <7.4.21 || >=8, <8.1.95.4.54, 6.4.48, 7.4.21, 8.1.9
symfony/symfonyPackagist<5.4.54 || >=6, <6.4.48 || >=7, <7.4.21 || >=8, <8.1.95.4.54, 6.4.48, 7.4.21, 8.1.9
Identifiers
GHSA-7rpj-w9pf-39rr · CVE-2026-109449
Weakness (CWE)
CWE-674
Tags
Published
15 Oct 2026
Updated
15 Oct 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
8.7 High 4.0 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 CNA (Checkmarx)
  • CISA KEV Not listed.
  • EPSS 0.0038, the 32nd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 15 Oct 2026, 06:58 UTC Published by the maintainers as a GitHub repository advisory
  2. 8 Nov 2026, 20:02 UTC First seen by agentprime

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.