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CVE-2019-9942

13
FAUCET Score

CVE-2019-9942 describes a sandbox information disclosure vulnerability in Twig versions prior to 1.38.0 and 2.x prior to 2.7.0, affecting Debian and Symfony distributions. This flaw allows an attacker to call the __toString() method on an object, bypassing the security policy and potentially leading to information leakage. With a low CVSS score of 3.7, the attack requires high complexity and has a low impact on confidentiality, with no integrity or availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.38.0CPE matchmatch criteria
cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*
>= 2.0.0, < 2.7.0CPE matchmatch criteria
cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 56th percentile among its peer group of 1,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: twig/twigFixed in: 1.38.0
composerpatch availablevia ghsa
Product: twig/twigFixed in: 2.7.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-vxrc-68xx-x48glow

Twig Sandbox Information Disclosure

Mar 26, 2022

References

github.com / twigphp/Twig/commit/eac5422956e1dcca89a3669a03a3ff32f0502077
PatchThird Party Advisory
seclists.org / bugtraq/2019/Mar/60
Mailing ListThird Party Advisory
symfony.com / blog/twig-sandbox-information-disclosure
PatchVendor Advisory
debian.org / security/2019/dsa-4419
Third Party Advisory