UBUNTU-CVE-2026-46628
Twig, a PHP template language, has a vulnerability in versions prior to 3.26.0 where the deprecated spaceless filter is incorrectly registered as safe for HTML. This causes the autoescaping feature to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. The issue is resolved in version 3.26.0.
AI Analysis
Technical Summary
The vulnerability in php-twig versions before 3.26.0 involves the deprecated spaceless filter being registered as safe for HTML, which leads to Twig's autoescaping mechanism failing to escape attacker-controlled markup properly when the spaceless filter is applied to untrusted input. This can result in unescaped HTML output, potentially enabling injection of malicious markup. The vulnerability is fixed in version 3.26.0.
Potential Impact
This vulnerability allows attacker-controlled input to bypass Twig's autoescaping when using the spaceless filter, potentially leading to injection of unescaped HTML markup. This can increase the risk of cross-site scripting (XSS) or other injection-based attacks if untrusted input is processed with the spaceless filter. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade php-twig to version 3.26.0 or later, where the issue with the spaceless filter registration is fixed. No other mitigation is indicated by the vendor advisory.
UBUNTU-CVE-2026-46628
Description
Twig, a PHP template language, has a vulnerability in versions prior to 3.26.0 where the deprecated spaceless filter is incorrectly registered as safe for HTML. This causes the autoescaping feature to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. The issue is resolved in version 3.26.0.
CVSS v4.0
Affected software
pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in php-twig versions before 3.26.0 involves the deprecated spaceless filter being registered as safe for HTML, which leads to Twig's autoescaping mechanism failing to escape attacker-controlled markup properly when the spaceless filter is applied to untrusted input. This can result in unescaped HTML output, potentially enabling injection of malicious markup. The vulnerability is fixed in version 3.26.0.
Potential Impact
This vulnerability allows attacker-controlled input to bypass Twig's autoescaping when using the spaceless filter, potentially leading to injection of unescaped HTML markup. This can increase the risk of cross-site scripting (XSS) or other injection-based attacks if untrusted input is processed with the spaceless filter. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade php-twig to version 3.26.0 or later, where the issue with the spaceless filter registration is fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-46628
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:Pro:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a58b4a068715ace43da8d58
Added to database: 07/16/2026, 10:38:24 UTC
Last enriched: 07/16/2026, 12:31:06 UTC
Last updated: 07/16/2026, 12:31:06 UTC
Views: 2
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