DEBIAN-CVE-2026-109449

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Source
https://security-tracker.debian.org/tracker/CVE-2026-109449
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-109449.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-109449
Upstream
Published
2026-10-15T16:17:43Z
Modified
2026-10-18T04:00:07Z
Severity
  • 8.7 (High) CVSS_V4 - 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

In Symfony Expression Language versions prior to 5.4.54, 6.4.48, 7.4.21, and 8.1.9, the parser of the ExpressionLanguage component built its node tree with no bound on its depth. An expression made of tens of thousands of nested unary operators, array literals, binary operators or property accesses crashed the PHP process, while the tree was being freed. #[Assert\ExpressionSyntax] passes the validated value to ExpressionLanguage::lint(), so an application validating expressions written by its users could be crashed by a single request, and so could any code parsing untrusted expressions. This issue affects symfony/expression-language through v5.4.53, v6.0.0-BETA1 through v6.4.47, v7.0.0-BETA1 through v7.4.20, and v8.0.0-BETA1 through v8.1.8.

References

Affected packages

Debian:12 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.4.23+dfsg-1
5.4.23+dfsg-1+deb12u1
5.4.23+dfsg-1+deb12u2
5.4.23+dfsg-1+deb12u3
5.4.23+dfsg-1+deb12u4
5.4.23+dfsg-1+deb12u5
5.4.24+dfsg-1
5.4.25+dfsg-1
5.4.27+dfsg-1
5.4.28+dfsg-1
5.4.29+dfsg-1
5.4.30+dfsg-1
5.4.31+dfsg-1
5.4.31+dfsg-2
5.4.32+dfsg-1
5.4.33+dfsg-1
5.4.34+dfsg-1
5.4.34+dfsg-2
5.4.35+dfsg-1
5.4.35+dfsg-2
5.4.35+dfsg-3
5.4.52+dfsg-0+deb12u1
5.4.53+dfsg-0+deb12u1
6.*
6.3.0~rc1+dfsg-1
6.3.0~rc2+dfsg-1
6.3.0+dfsg-1
6.3.1+dfsg-1
6.3.3+dfsg-1
6.3.4+dfsg-1
6.3.5+dfsg-1
6.3.6+dfsg-1
6.3.7+dfsg-1
6.4.0~beta2+dfsg-1
6.4.0~beta3+dfsg-1
6.4.0~rc1+dfsg-1
6.4.0~rc2+dfsg-1
6.4.0+dfsg-1
6.4.1+dfsg-1
6.4.2+dfsg-1
6.4.3+dfsg-1
6.4.4+dfsg-1
6.4.4+dfsg-2
6.4.4+dfsg-3
6.4.4+dfsg-4
6.4.5+dfsg-1
6.4.5+dfsg-2
6.4.5+dfsg-3
6.4.5+dfsg-4
6.4.6+dfsg-1
6.4.7+dfsg-1
6.4.9+dfsg-1
6.4.10+dfsg-1
6.4.11+dfsg-1
6.4.12+dfsg-1
6.4.13+dfsg-1
6.4.14+dfsg-1
6.4.15+dfsg-1
6.4.16+dfsg-1
6.4.16+dfsg-2
6.4.17+dfsg-1
6.4.17+dfsg-2
6.4.17+dfsg-3
6.4.17+dfsg-4
6.4.17+dfsg-5
6.4.17+dfsg-6
6.4.18+dfsg-1
6.4.19+dfsg-1
6.4.19+dfsg-2
6.4.20+dfsg-1
6.4.20+dfsg-2
6.4.21+dfsg-1
6.4.21+dfsg-2
6.4.24+dfsg-1
6.4.25+dfsg-1
7.*
7.0.4+dfsg-1
7.0.5+dfsg-1
7.0.6+dfsg-1
7.0.7+dfsg-1
7.1.0~beta1+dfsg-1
7.1.0~rc1+dfsg-1
7.1.2+dfsg-1
7.1.3+dfsg-1
7.1.4+dfsg-1
7.1.5+dfsg-1
7.2.0~beta1+dfsg-1
7.2.0~beta2+dfsg-1
7.2.0~rc1+dfsg-1
7.2.1+dfsg-1
7.2.2+dfsg-1
7.2.3+dfsg-1
7.2.4+dfsg-1
7.2.5+dfsg-1
7.2.6-1
7.3.0~beta1+dfsg-1
7.3.0~beta2+dfsg-1
7.3.0~rc1+dfsg-1
7.3.0+dfsg-1
7.3.1+dfsg-1
7.3.2+dfsg-1
7.3.3+dfsg-1
7.3.4+dfsg-1
7.3.5-1
7.4.0~beta1-1
7.4.0~beta1-2
7.4.0~beta2+dfsg-1
7.4.0~beta2+dfsg-2
7.4.0~beta2+dfsg-3
7.4.0~rc1+dfsg-1
7.4.0~rc2+dfsg-1
7.4.0~rc3+dfsg-1
7.4.0+dfsg-1
7.4.0+dfsg-2
7.4.2+dfsg-1
7.4.2+dfsg-2
7.4.3+dfsg-1
7.4.4+dfsg-1
7.4.5+dfsg-1
7.4.6+dfsg-1
7.4.6+dfsg-2
7.4.7+dfsg-1
7.4.8+dfsg-1
7.4.9+dfsg-1
7.4.10+dfsg-1
7.4.12+dfsg-1
7.4.13+dfsg-1
7.4.13+dfsg-2
7.4.14+dfsg-1
7.4.15+dfsg-1
7.4.15+dfsg-2
7.4.16+dfsg-1
7.4.17+dfsg-1
7.4.18+dfsg-1
7.4.19+dfsg-1
7.4.20+dfsg-1
7.4.21+dfsg-1
8.*
8.0.0~beta2+dfsg-1
8.0.0~beta2+dfsg-2
8.0.0~rc1+dfsg-1
8.0.0~rc2+dfsg-1
8.0.0~rc3+dfsg-1
8.0.0+dfsg-1
8.0.2+dfsg-1
8.0.3+dfsg-1
8.0.4+dfsg-1
8.0.5+dfsg-1
8.0.6+dfsg-1
8.0.7+dfsg-1
8.0.8+dfsg-1
8.0.9+dfsg-1
8.0.10-1
8.0.11+dfsg-1
8.0.12+dfsg-1
8.0.13+dfsg-1
8.1.0+dfsg-1
8.1.1+dfsg-1
8.1.3+dfsg-1
8.1.4+dfsg-1
8.1.5+dfsg-1
8.1.6+dfsg-1
8.1.7+dfsg-1
8.1.8+dfsg-1
8.1.9+dfsg-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-109449.json"

Debian:13 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.4.21+dfsg-2
6.4.21+dfsg-2+deb13u1
6.4.24+dfsg-1
6.4.25+dfsg-1
6.4.40+dfsg-0+deb13u1
6.4.41+dfsg-0+deb13u1
7.*
7.0.4+dfsg-1
7.0.5+dfsg-1
7.0.6+dfsg-1
7.0.7+dfsg-1
7.1.0~beta1+dfsg-1
7.1.0~rc1+dfsg-1
7.1.2+dfsg-1
7.1.3+dfsg-1
7.1.4+dfsg-1
7.1.5+dfsg-1
7.2.0~beta1+dfsg-1
7.2.0~beta2+dfsg-1
7.2.0~rc1+dfsg-1
7.2.1+dfsg-1
7.2.2+dfsg-1
7.2.3+dfsg-1
7.2.4+dfsg-1
7.2.5+dfsg-1
7.2.6-1
7.3.0~beta1+dfsg-1
7.3.0~beta2+dfsg-1
7.3.0~rc1+dfsg-1
7.3.0+dfsg-1
7.3.1+dfsg-1
7.3.2+dfsg-1
7.3.3+dfsg-1
7.3.4+dfsg-1
7.3.5-1
7.4.0~beta1-1
7.4.0~beta1-2
7.4.0~beta2+dfsg-1
7.4.0~beta2+dfsg-2
7.4.0~beta2+dfsg-3
7.4.0~rc1+dfsg-1
7.4.0~rc2+dfsg-1
7.4.0~rc3+dfsg-1
7.4.0+dfsg-1
7.4.0+dfsg-2
7.4.2+dfsg-1
7.4.2+dfsg-2
7.4.3+dfsg-1
7.4.4+dfsg-1
7.4.5+dfsg-1
7.4.6+dfsg-1
7.4.6+dfsg-2
7.4.7+dfsg-1
7.4.8+dfsg-1
7.4.9+dfsg-1
7.4.10+dfsg-1
7.4.12+dfsg-1
7.4.13+dfsg-1
7.4.13+dfsg-2
7.4.14+dfsg-1
7.4.15+dfsg-1
7.4.15+dfsg-2
7.4.16+dfsg-1
7.4.17+dfsg-1
7.4.18+dfsg-1
7.4.19+dfsg-1
7.4.20+dfsg-1
7.4.21+dfsg-1
8.*
8.0.0~beta2+dfsg-1
8.0.0~beta2+dfsg-2
8.0.0~rc1+dfsg-1
8.0.0~rc2+dfsg-1
8.0.0~rc3+dfsg-1
8.0.0+dfsg-1
8.0.2+dfsg-1
8.0.3+dfsg-1
8.0.4+dfsg-1
8.0.5+dfsg-1
8.0.6+dfsg-1
8.0.7+dfsg-1
8.0.8+dfsg-1
8.0.9+dfsg-1
8.0.10-1
8.0.11+dfsg-1
8.0.12+dfsg-1
8.0.13+dfsg-1
8.1.0+dfsg-1
8.1.1+dfsg-1
8.1.3+dfsg-1
8.1.4+dfsg-1
8.1.5+dfsg-1
8.1.6+dfsg-1
8.1.7+dfsg-1
8.1.8+dfsg-1
8.1.9+dfsg-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-109449.json"

Debian:14 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
7.4.21+dfsg-1

Affected versions

6.*
6.4.21+dfsg-2
6.4.24+dfsg-1
6.4.25+dfsg-1
7.*
7.0.4+dfsg-1
7.0.5+dfsg-1
7.0.6+dfsg-1
7.0.7+dfsg-1
7.1.0~beta1+dfsg-1
7.1.0~rc1+dfsg-1
7.1.2+dfsg-1
7.1.3+dfsg-1
7.1.4+dfsg-1
7.1.5+dfsg-1
7.2.0~beta1+dfsg-1
7.2.0~beta2+dfsg-1
7.2.0~rc1+dfsg-1
7.2.1+dfsg-1
7.2.2+dfsg-1
7.2.3+dfsg-1
7.2.4+dfsg-1
7.2.5+dfsg-1
7.2.6-1
7.3.0~beta1+dfsg-1
7.3.0~beta2+dfsg-1
7.3.0~rc1+dfsg-1
7.3.0+dfsg-1
7.3.1+dfsg-1
7.3.2+dfsg-1
7.3.3+dfsg-1
7.3.4+dfsg-1
7.3.5-1
7.4.0~beta1-1
7.4.0~beta1-2
7.4.0~beta2+dfsg-1
7.4.0~beta2+dfsg-2
7.4.0~beta2+dfsg-3
7.4.0~rc1+dfsg-1
7.4.0~rc2+dfsg-1
7.4.0~rc3+dfsg-1
7.4.0+dfsg-1
7.4.0+dfsg-2
7.4.2+dfsg-1
7.4.2+dfsg-2
7.4.3+dfsg-1
7.4.4+dfsg-1
7.4.5+dfsg-1
7.4.6+dfsg-1
7.4.6+dfsg-2
7.4.7+dfsg-1
7.4.8+dfsg-1
7.4.9+dfsg-1
7.4.10+dfsg-1
7.4.12+dfsg-1
7.4.13+dfsg-1
7.4.13+dfsg-2
7.4.14+dfsg-1
7.4.15+dfsg-1
7.4.15+dfsg-2
7.4.16+dfsg-1
7.4.17+dfsg-1
7.4.18+dfsg-1
7.4.19+dfsg-1
7.4.20+dfsg-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-109449.json"