7.1

CVE-2026-46627: symfony twig Uncontrolled Resource Consumption

CVSS: 7.1v4.0HighAnalyzed
AliasesUBUNTU-CVE-2026-46627DEBIAN-CVE-2026-46627
Published 14-07-2026Last modified 16-07-2026
Open JSON

Vulnerability summary

CVE-2026-46627 is a high (CVSS 7.1) Uncontrolled Resource Consumption vulnerability in symfony twig. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 44.4% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.54%
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. 16-07-2026
    Last modifiedVulnerability information updated.

Description

Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.54%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

0.00 pp

From 0.54% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.54%

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-twigAll versions (No fix recorded) | < 3.27.0-0+deb13u1 | < 3.26.0-1
Symfony1 product
Twigphp1 product
Ubuntu1 product
  • php-twigAll versions (No fix recorded)

4 vendors · 4 products

References

7 links