7.1

CVE-2026-46639: symfony twig Protection Mechanism Failure

CVSS: 7.1v4.0HighAnalyzed
AliasesUBUNTU-CVE-2026-46639DEBIAN-CVE-2026-46639
Published 14-07-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-46639 is a high (CVSS 7.1) Protection Mechanism Failure vulnerability in symfony twig. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 32.4% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-07-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

Description

Twig is a template language for PHP. From 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to read public properties or invoke public getters on objects passed to the template engine. This issue is fixed in version 3.26.0.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

0.00 pp

From 0.39% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • php-twig< 3.26.0-1
Symfony1 product
  • twig≥ 3.24.0, < 3.26.0
Twigphp1 product
  • twig≥ 3.24.0, < 3.26.0
Ubuntu1 product
  • php-twigAll versions (No fix recorded)

4 vendors · 4 products

References

6 links