9.1

CVE-2026-48807: symfony twig Protection Mechanism Failure

CVSS: 9.1v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-48807DEBIAN-CVE-2026-48807
Published 14-07-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-48807 is a critical (CVSS 9.1) Protection Mechanism Failure vulnerability in symfony twig. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
0.37%
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. Prior to 3.27.0, the sandbox __toString() checks do not fully cover Traversable values passed to join and replace filters or operands evaluated by the in and not in operators, allowing contained Stringable objects to be coerced to strings without consulting the sandbox policy. This issue is fixed in version 3.27.0.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

0.00 pp

From 0.37% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.37%

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< 3.27.0-1
Symfony1 product
Twigphp1 product
Ubuntu1 product
  • php-twigAll versions (No fix recorded)

4 vendors · 4 products

References

6 links