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CVE-2020-15094

29
FAUCET Score

CVE-2020-15094 is a remote code execution vulnerability affecting Symfony versions prior to 4.4.13 and 5.1.5, specifically within the CachingHttpClient component. An attacker can exploit this by controlling a response processed by CachingHttpClient, leveraging internal headers (X-Body-Eval, X-Body-File) intended for trusted backend communication. This vulnerability carries a CVSS score of 8.8 (High), indicating a network-based attack with low complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.4.0, < 4.4.13CPE matchmatch criteria
cpe:2.3:a:sensiolabs:httpclient:*:*:*:*:*:*:*:*
>= 5.1.0, < 5.1.5CPE matchmatch criteria
cpe:2.3:a:sensiolabs:httpclient:*:*:*:*:*:*:*:*
>= 4.4.0, < 4.4.13CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 5.1.0, < 5.1.5CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.04%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0304 is in the 85th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

composerpatch availablevia ghsa
Product: symfony/http-kernelFixed in: 5.1.5
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 5.1.5
composerpatch availablevia ghsa
Product: symfony/http-kernelFixed in: 4.4.13
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 4.4.13
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-754h-5r27-7x3rhigh

RCE in Symfony

Sep 2, 2020

References

github.com / symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66d78
PatchThird Party Advisory
github.com / symfony/symfony/security/advisories/GHSA-754h-5r27-7x3r
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HNGUWOEETOFVH4PN3I3YO4QZHQ4AUKF3
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/VAQJXAKWPMWB7OL6QPG2ZSEQZYYPU5RC
packagist.org / packages/symfony/http-kernel
ProductThird Party Advisory
packagist.org / packages/symfony/symfony
ProductThird Party Advisory